Has anyone replaced the spark Plugs in their Patriot yet? I have 25.5K miles and am going to need to replace them at 30K miles. Just wondering if anyone has done it yet and what kind of plugs they used. Wal-Mart had some Bosch Platnium ones on sale a couple weeks ago and thats what I put in my Grand Cherokee. The GC was easy to replace and the Patriot looks even easier to change.

Not to hijack the thread, but I'll add this question: What about the 100,000 mile platinum sparkplugs. I only had to change the plugs in my Saturn Vue every 100,000 miles. Isn't every 30,000 kinda weird for a new car?

Many manufacturers have gone back to the 30k spark plug change. I think the 100k plugs are only for ideal conditions. Spark plugs are cheap and easy to change so its better than other items going bad:

Read this from a google search I found:

"Under ideal conditions (which usually means no town driving, no stop and go driving, no high speed driving and temperatures between above 40F and below 60F) a set of Platinum spark plugs might make it to 100K.
After 60,000 to 70,000 miles performance and mileage loss occurs. Due to worn electrodes on the spark plugs, voltage demands to create a spark are escalate, leading to burned-out modules, coils, spark plug wires and other ignition components. These components are more expensive than spark plugs and they don't fail at convenient times.

Another problem are the seized plugs that take the threads right out of the aluminum cylinder heads when you try to remove them after 100,000 miles! A cylinder head is really going to drive up the cost of a "tune up""

Pull the OEM plugs and put a dab of anti-seize on them and put them back in, then there are no worries later when you need them taken out.

Does the patriot really require plugs at 30K? Hmmm...

It does seem excessive to change out at 30K as the manual states; however, Hunter44102's search results seem reasonable. I would be surprised if the factory plugs are not already platinum. They do look simple to replace and adding anti-seize to the threads is the ticket. With the cost of gas, I plan on frequent replacement.

You could always pull them and check the gap, and just reinstall them if everything looks good.

I always do plugs at 50K regardless of what the mfg says. Anyone know what brand of plug they use in the Patriot? Mopar almost always used Champs in the past.

I agree with MrSensible on the interval for all cars. Cleaning and regapping plugs went out with my bell bottoms and polka dotted shirts.

Regular cheap Autolite's @30k for me, I've never had something not run well on them. Platinum's on the other hand made my truck and cherokee both idle and run like crap.

I have had great luck with platinum, but the Autolites I put in my Mustang really made it fly. The speeding ticket was no fun, and that is why I will drive a 4-banger for the foreseeable future.

I ponied up for the Bosch Platinum +4s for my Zetec-powered Focus. Wow, what a difference! Smoother idle, smoother quicker acceleration, they were great! For a little while. A month later I attended a course about spark plugs and ignition, put on by a fella from NGK. When I told him about my experience, he informed me that Bosch didn't make a +4 for my application. Turns out he was right, Bosch's catalog wasn't. The Zetec uses plugs with a longer threaded area, so the Bosch plugs were firing up inside the holes in the head. Luckily I was able to replace them before they did any damage! (Also the +4 doesn't work well with certain ignition systems; apparently the Focus uses a wasted-spark ignition that can fire from the electrode to the tip OR the other way round, so the +4 doesn't help anything.)

Regular cheap Autolite's @30k for me, I've never had something not run well on them. Platinum's on the other hand made my truck and cherokee both idle and run like crap.

A rig has to be designed to run with plats or it'll be just like you say. Similarly, you should always run plats if that's how it's designed.

Plats only have the edge when it comes to maintaining gap. They take a lot of coil to fire, and they're bitchy about good wires. They're usually found on rigs where it's a PITA to change 'em like my Town & Country. Damn near have to drop the engine to get to the back three!

Otherwise, the old standards literally give the best bang for the buck. Unless folks are gonna mod the entire firing circuit, they should stick with what the mfg recommends, IMO

Lately I've seen some ads in magazines for Pulstar spark plugs (pulstarplug.com) any body know anything about these?

from my experience with Toyotas that use iridium plugs from the factory, Any vehicle with direct ignition (The coil is mounted directly on the sparkplug) should use platinum or better plugs due to the higher resistence value these metals have. a normal copper core spark plug will not have an optimal spark with direct ignition systems. This could cause a slight loss in fuel milege. I know the patriot does have direct ignition so i would imagine that they use at least platinums from the factory. Does anyone know for sure?

from my experience with Toyotas that use iridium plugs from the factory, Any vehicle with direct ignition (The coil is mounted directly on the sparkplug) should use platinum or better plugs due to the higher resistence value these metals have. a normal copper core spark plug will not have an optimal spark with direct ignition systems. This could cause a slight loss in fuel milege. I know the patriot does have direct ignition so i would imagine that they use at least platinums from the factory. Does anyone know for sure?

That is not the case with newer TJs, which use a direct ignition system. The prefered plug among most forum users is Champion's truck plug - the platinums (particularly the Bosch) have been reported to cause missing and poor performance. Again, this is with TJs with the old inline 6, but I'm just saying "any vehicle with direct ignition should use platinum" isn't a true statement.

That is not the case with newer TJs, which use a direct ignition system. The prefered plug among most forum users is Champion's truck plug - the platinums (particularly the Bosch) have been reported to cause missing and poor performance. Again, this is with TJs with the old inline 6, but I'm just saying "any vehicle with direct ignition should use platinum" isn't a true statement.

I guess all auto manufacturers are different. I did a lot of research into spark plugs when i supercharged a corolla i had and the direct ignition with standard copper core plugs was alway seen as a bad idea.

Your definately right about the Bosch plugs. they are garbage and should never be used in anything. I use NGK or Denso plugs usually. Champion is factory for Chryslers isnt it?

I would say if you are going to change the plugs also look into changing out the cables I just did an overhaul on my dakota and chaned the plugs along with some performance cables and you do see the difference

I used Bosch platinum plugs in the early 90's on my Suraru legacies. Performance with them was fine, but I do remember a warning that trying for maximum mileage with platinum has a danger. It was stated that towards the end of their use they had a tendency to allow the tip to break off and fall off into the cylinder, doing all sorts of wonderful things to the cylinder walls!

In any case, I'm just sticking with the standard issue plugs and service with my Pat.

I have 25.5K miles and am going to need to replace them at 30K miles.

I didn't see any updated threads... so did you replace them (the spark plugs)?
Did you notice a difference in MPG? Power?
I don't have to worry about replacing them myself for a little while because my PAT only has 2K miles on it. I was just wondering.
I am gonna replace the SP's on my wife's 2002 tahoe tommorow.
I figure 6 years and 105K miles is long enough....:wow:
I am also changing the oil from 5w30 to 10w30 at the same time (tahoe) because I have noticed a little knock when cold (first start of the day)

well i changed the plugs to day. I used bosch platinum +2, and when I started driving i felt a little difference (smooth) and so far it seems like there might be a slight hp gain, but nothing major but its nice.

How many miles were you at? How accessible were the plugs?

Mopar Part #SP00ZFR5AP are used for the 2.4 L (Part #SP0ZFR5F11 for the 2.0 L)

I have no idea who makes these.

Mopar Part #SP00ZFR5AP are used for the 2.4 L (Part #SP0ZFR5F11 for the 2.0 L)

I have no idea who makes these.

The factory part number is an NGK plug for the GEMA engines. NGKs seem to work fine in everything Ive put them in, but If i switched brands Id go champion, they seem to give best performance in my TJ.

If they make them spend the extra cash for iridium plugs they are far better than platinum. i use them in my ws6 and my ss it really made a difference.

How many miles were you at? How accessible were the plugs?


???
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The manual shows NGK ZFR5F-11 plugs

I too was just looking into changing my plugs. I was looking at the Bosch Platum 4 fusion Iridium plugs, then I saw the pulsar plugs. My G. Caravan needs a set and I figured I do both vehicles. I can use all the gas savings I can get.

My Patriot is at 15K KM and the Caravan is at 38K Km.

I think the Van might get the pulsars if I can find them locally. I'll let you know hows the millage changes. I've been logging both vehicles for the last 8 tanks.

By the way the Patriot's EVAC Avg KM/100L is consistantly out by about 2 tenths

I read the limited warrenty and in it it says the plugs are covered for 36,000 miles. Why Jeep wants you to replace them at 30,000 is a little suspect. If you don't then is the lifetime warranty void? Makes me wonder to the true value to the warranty. I guess we will see when people start having issues in the future.

I used to be a member of a Dakota R/T user group and one of the guys on the group had access to a dyno. One of the mods that was always suggested was to switch from Champion plugs (which I think were platinum) to the Autolite copper cores (3924 i think was the part number and if I remember correctly was like one point colder plug). So he put in a new set of Champions, dynoed, then the Autolites and dynoed again. He saw a 5 hp gain at the wheels. He thought it was a mistake so he switched them out and dynoed two more times (three dyno runs on each plug and each run consisted of three pulls, then averaged the output). It kept coming up to a 5hp gain. Now before everyone decides to start throwing Autolites on their rigs, that was one specific combination that worked (360 cu. in. V8, fuel injected with electronic ignition using standard distributor with remote coil) and is not saying the Autolites are better then any other plug.

As the saying goes, one dyno test is worth a thousand expert opinions. Thanks.

e3 spark plugs run beautifully

What's the torque spec for the plugs? I need to change mine this weekend

Most spark plugs don't have torque specs. It is usually a rule of thumb that if the plug has a crush washer, tighten it down until it is fairly tight, and then add a half turn. If it doesn't have a crush washer, and is tapered, tighten it down until it's tight and then add a 1/4 turn.

It has been my experience working on Chrysler products my entire life that Bosch plugs are junk. I can't tell you how many Dodge, Chryslers, and Jeeps that I have seen with a P0300(multiple cylinder misfire) dtc set within a few hundred miles of having the plugs replaced. You pull the vehicle in, and it is misfiring badly. Pull a plug, and sure enough, it's a Bosch platinum +2 or +4. You tell the customer that their vehicle needs new plugs, and they tell you that they just replaced them. So you install Champion plugs (or NGKs on certain applications), and the misfires go away completely. Then the custoemr is pissed that they spent $6-$9 a plug for the Bosch platinums.

For the Pat, I recommend just using the OEM NGK plugs. Set the gap to 1.1mm, change them every 30K miles, and you'll be fine.

My last rant in this post- If something as cheap as a spark plug really increased fuel mileage and HP, the manufacturers would be using them as OEM. You can argue this point, but it's true. Manufacturers have to maintain a fleet mileage average by Federal law.
As an example, GM spent a ton of money to find out that the wind resistance of an external mounted radio antenna cost something like .003 MPG, and then engineered the new antennas, which are either incorporated into the windshield or are more aerodynamically shaped now. If a spark plug actually increased your gas mileage by any appreciable amount, don't you think that they would use them to get an increase, rather than going through all the trouble figuring out the wind resistance of a radio antenna?

All of the Bosch platinum, Splitfire, E3, etc. plugs are BS!! A complete waste of money.

Torque spec is 20 ft/lbs. Make sure that the dealer gives you the right plugs. I bought a set last night and they tried to give me the plugs for thw 2.0 instead of the 2.4

I changed my plugs yesterday on my 2.4. It was so easy. The engine cover just pulls off. No screws. It is a pressure fit on mine.

I love the plug cover setup. So easy to work on.

I just got the standard NGK plugs that it came with.

I did mine as well. At 28,000 miles, they looked pretty worn out. I agree at the ease of installation. I may change these every 20,000.

My last rant in this post- If something as cheap as a spark plug really increased fuel mileage and HP, the manufacturers would be using them as OEM. You can argue this point, but it's true. Manufacturers have to maintain a fleet mileage average by Federal law.
As an example, GM spent a ton of money to find out that the wind resistance of an external mounted radio antenna cost something like .003 MPG, and then engineered the new antennas, which are either incorporated into the windshield or are more aerodynamically shaped now. If a spark plug actually increased your gas mileage by any appreciable amount, don't you think that they would use them to get an increase, rather than going through all the trouble figuring out the wind resistance of a radio antenna?

All of the Bosch platinum, Splitfire, E3, etc. plugs are BS!! A complete waste of money.

I partially agree with this statement, except you are leaving out the biggest factor of them all. COST. Maybe the plugs do produce better mileage or HP, and maybe the car manufacturers asked them (the E3's, +4's, etc.) to be a supplier, but they would be $2 more per plug, per vehicle. So an extra $8-$16 per vehicle, depending on the number of cyl. may outweigh the cafe standard cost or savings. When you are producing hundreds of thousands of vehicles a year, saving just $2 on each build could translate into a million dollar savings. Redesigning the antenna might have been cheaper then paying more per plug, and got them to their minimum cafe standard (you don't think they're really going to go above and beyond cafe do you?).

Hey Fellas what is the part # for the NGK plugs for the 2.4?? the NGK # that is

Has anyone replaced the spark Plugs in their Patriot yet? I have 25.5K miles and am going to need to replace them at 30K miles. Just wondering if anyone has done it yet and what kind of plugs they used. Wal-Mart had some Bosch Platnium ones on sale a couple weeks ago and thats what I put in my Grand Cherokee. The GC was easy to replace and the Patriot looks even easier to change.

Just pulled a plug from my wife's patriot, there is a ring of rust around the plug where the ceramic meets the metal. I haven't pulled the other three yet to check condition of those, but the business end still looks good. THe mielage is slightly above 35K. I'll post some pics of the pulled plugs, just got to get replacements first. Also, has anyone checked the PCV valve, this is alos recommended at the 30K check.

Thanks.

Also forgot to mention, the vehivle is the 2.4L Limited 4x4 with a bunch of extras, however the plug pulled from the engine had the following part # NGKZFR5F11, whci contradicts an earlier post stating the 2.4L should run the NGKZFR5AP, my guess is the factory didn't drop in the right plugs. I verified the engine numbers and the vin numbers to ensure the enigne is the 2.4L. Just food for thought...

Also forgot to mention, the vehivle is the 2.4L Limited 4x4 with a bunch of extras, however the plug pulled from the engine had the following part # NGKZFR5F11, whci contradicts an earlier post stating the 2.4L should run the NGKZFR5AP

The manual for the 2008 lists the NGKZFR5F11 as being the proper part number for the plugs. That's the same as the regular NGK V-Power plugs I bought at Advance Auto Parts.

The latest advances in sparkplug technology have brought us the E3 Sparkplug with Diamond Fire Technology. For more information log onto "e3sparkplugs.com" and watch them blow away the competition on Power Block TV. There are currently 5 videos on their site, and the one you’ll be looking for is video 2 of 5.

I own these plugs and they are amazing!

You can pick them up at Advanced Auto.

The latest advances in sparkplug technology have brought us the E3 Sparkplug with Diamond Fire Technology. For more information log onto "e3sparkplugs.com" and watch them blow away the competition on Power Block TV. There are currently 5 videos on their site, and the one you’ll be looking for is video 2 of 5.

I own these plugs and they are amazing!

You can pick them up at Advanced Auto.

"Diamond Fire Technology"? Do you work for these guys or something? I might believe that there's a difference in performance of various plugs, but when all that they can say is nebulous marketing-speak and trademarked terms (how in God's green earth do you get diamonds to burn?), it tells me that their products are nothing more than smoke, mirrors, and high price tags.

I'll stick with my $2/plug NGKs from Advance, thanks.

With all due respect, the answer to your question is no. I do not work for their company. I believe the nebulous marketing-terms you speak of actually refer to the unique design that the manufactures used to maximize the performance of their spark plug. I am not sure how you would get a diamond to burn, but I assure you; that was not meant to be taken literal. I am sorry if the information that I provided was of no personal interest to you. Not to discredit NGK; I do recommend this particular brand of plug. Thanks.

I wondered if the coils were directly mated to the top of the 'plugs. Thanks for the confirmation. Now to find the right size Torx driver......

I also got a good deal on the Bosch +4's. Fine German Eng'g. ;)

On a somewhat related note, I just went back to using Champions in my XJ after running the Bosch Plat 2s for 30k miles. What a difference. My engine now actually idles how it should. I used the Boschs in the wife's VW before we bought the Patriot and they were great, so in ignorance I put them in my Jeep. I'm glad they are out now.

I wondered if the coils were directly mated to the top of the 'plugs. Thanks for the confirmation. Now to find the right size Torx driver......

I also got a good deal on the Bosch +4's. Fine German Eng'g. ;)

I want to say it was a T20 or T25. It was too big for any of my Torx screwdrivers and too small for the few sockets I had- ended up going to Home Depot and getting a new set of Torx sockets just to make sure I had the entire range covered.

Same here, just got a Torx set and then made easy work of the 'plug swap.

I want to say it was a T20 or T25. It was too big for any of my Torx screwdrivers and too small for the few sockets I had- ended up going to Home Depot and getting a new set of Torx sockets just to make sure I had the entire range covered.

Lately I've seen some ads in magazines for Pulstar spark plugs (pulstarplug.com) any body know anything about these?

Here is the link http://www.pulstar.com/index.htm
I'm kind of interested in these as well......but they appear to be overkill for our 4 bangers. Might be real nice in a Viper or Challenger :)

I wanna say closer to t-30 becuase I used a T25 and it was too small but it worked

Here is the link http://www.pulstar.com/index.htm
I'm kind of interested in these as well......but they appear to be overkill for our 4 bangers. Might be real nice in a Viper or Challenger :)

Might be but at the end of the day, what engine does a Prius have that wound up getting (according to the test result) 5 MPG more?

My only concern is this... the plug gets the fuel mixture to burn "earlier" for a more "efficient" burn. Isn't there a specification as to when the burn is supposed to happen in the engine? Wouldn't burning too early be just as much of a problem as burning too late? - Not knocking down these plugs... I am interested... VERY INTERESTED since they reduce emissions also. I just have this doubt in my head.

What is the final price of these plugs? Didn't see it anywhere... I did see some reference to $25/plug???

Most spark plugs don't have torque specs. It is usually a rule of thumb that if the plug has a crush washer, tighten it down until it is fairly tight, and then add a half turn. If it doesn't have a crush washer, and is tapered, tighten it down until it's tight and then add a 1/4 turn.

It has been my experience working on Chrysler products my entire life that Bosch plugs are junk. I can't tell you how many Dodge, Chryslers, and Jeeps that I have seen with a P0300(multiple cylinder misfire) dtc set within a few hundred miles of having the plugs replaced. You pull the vehicle in, and it is misfiring badly. Pull a plug, and sure enough, it's a Bosch platinum +2 or +4. You tell the customer that their vehicle needs new plugs, and they tell you that they just replaced them. So you install Champion plugs (or NGKs on certain applications), and the misfires go away completely. Then the custoemr is pissed that they spent $6-$9 a plug for the Bosch platinums.

For the Pat, I recommend just using the OEM NGK plugs. Set the gap to 1.1mm, change them every 30K miles, and you'll be fine.

My last rant in this post- If something as cheap as a spark plug really increased fuel mileage and HP, the manufacturers would be using them as OEM. You can argue this point, but it's true. Manufacturers have to maintain a fleet mileage average by Federal law.
As an example, GM spent a ton of money to find out that the wind resistance of an external mounted radio antenna cost something like .003 MPG, and then engineered the new antennas, which are either incorporated into the windshield or are more aerodynamically shaped now. If a spark plug actually increased your gas mileage by any appreciable amount, don't you think that they would use them to get an increase, rather than going through all the trouble figuring out the wind resistance of a radio antenna?

All of the Bosch platinum, Splitfire, E3, etc. plugs are BS!! A complete waste of money.

I have been running Bosch Platinum in my 97 Wrangler for years w/ great reults and big improvement over OEM, i.e. smooth idle, acceleration, durability. Currently have the E3 in my Compass: no complaints, but no noticeable mpg increase either. I guess it all depends on the specific application, or it is a completely random universe after all...:wow:

"Diamond Fire Technology"? Do you work for these guys or something? I might believe that there's a difference in performance of various plugs, but when all that they can say is nebulous marketing-speak and trademarked terms (how in God's green earth do you get diamonds to burn?), it tells me that their products are nothing more than smoke, mirrors, and high price tags.

I'll stick with my $2/plug NGKs from Advance, thanks.

Did a little research about the diamond thingy. As I suspected, it has nothing to do with that extra hard and durable carbon material we put on out ladies fingers as we say "I DO!". Its the configuration of the build of the plug. And this is what I found... I will try these out. Can't hurt too much.

"The Diamondfire design of the E3 Spark Plugs is unconventional. Instead of the usual J-shaped electrode, the E3 Spark Plugs is designed with a 3-legged diamond electrode which will produce a faster spark discharge directed towards the piston. This creates a high speed flame with a great amount of combustion pressure inside the combustion chamber, thus producing a large burst of energy for the piston.

The E3 Spark Plugs is designed around the concept of a faster and stronger flame, which gives a higher internal pressure to drive the piston that drives the engine. This is how fuel efficiency and energy is enhanced, and with a bigger flame, more of the fuel-air mixture inside the combustion chamber is burnt and less harmful chemicals are emitted."

Did a little research about the diamond thingy. As I suspected, it has nothing to do with that extra hard and durable carbon material we put on out ladies fingers as we say "I DO!". Its the configuration of the build of the plug. And this is what I found... I will try these out. Can't hurt too much.

"The Diamondfire design of the E3 Spark Plugs is unconventional. Instead of the usual J-shaped electrode, the E3 Spark Plugs is designed with a 3-legged diamond electrode which will produce a faster spark discharge directed towards the piston. This creates a high speed flame with a great amount of combustion pressure inside the combustion chamber, thus producing a large burst of energy for the piston.

The E3 Spark Plugs is designed around the concept of a faster and stronger flame, which gives a higher internal pressure to drive the piston that drives the engine. This is how fuel efficiency and energy is enhanced, and with a bigger flame, more of the fuel-air mixture inside the combustion chamber is burnt and less harmful chemicals are emitted."

The E3's work really well in my small engines.....I can see them performing well in a vehicle.

The E3's work really well in my small engines.....I can see them performing well in a vehicle.

Thanks for the reassurance. I have been reading reviews and funny that the only negative I was able to read was from a guy who said he got the smooth idle, faster acceleration, etc. He was "disappointed" with the mpg's BUT that he had had them for a very short time and hadn't really had a chance to evaluate the mpg's properly. He did see like a 1.5-2 mpg increase. That's good enough for me. Will try them and advise my personal experience. I'll personally be happy with any extra power at no cost of fuel efficiency.

When I installed the drop-in K&N I noticed an immediate improvement of starting the vehicle... and my Pat is only one month old!

I have the E3's. I don't know of any marked improvements. I put them in at only 3.5k miles on my jeep (after the first oil change). I now have 12k miles, and I avg about 29.5mpg (5spd manual). They certainly don't hurt. :)

Just installed a set of Autolite Platinum plugs in my Patriot yesterday. So far so good. Very easy install.

When I installed the drop-in K&N I noticed an immediate improvement of starting the vehicle... and my Pat is only one month old!

I agree, as i installed the K&N over the weekend; also noticed improvement on the pick-up.

Had the E3's for about a month now. Between them and the K&N drop in filter, I registered an increase in MPG's. Have maintained my same route and driving conditions. Over the weekend I built my own little air intake and am playing with that now... will advise later on when I get my next gas fill.

Just replaced my plugs today with the stock NGK. Had 31k on them. Easy job to do. Takes about 30 mins. Used a torque wrench, and applied anti seize. The factory plugs came out with a creak, and did not look like they had anything on them from the factory. Immediately noticed that it runs smoother. I would not go past 30k miles with these. They look fine, but for $2 each, i think i will be replacing them every 25k miles.

Here are the old ones - excuse the bad cell phone pic.

me dio flogera ponerme a traducirles ahi esta lo que fue mi experiencia con las 2ble electrodo de Bosch vs las que traia mi patriota de agencia despues de 20 mil kilometros una bosh estaba golpeada y aparece ahi se debe meter el zoom cambie las 4 de nuevo por bosch ya sin golpes ( jaajaja ) y el resultado para mi ha sido exelente las seguire cambiando cada 20 mil kilometros no cuestan nada y es muy facil las bosh de las fotos las estube usando 7 mil kilometros antes de darme cuenta que una estaba golpeada pude notar en esos 7 mil que en frio se notaba un poco de "tironeo" nada mas y mi patriota con las nuevas bosch esta muy bien casi no se nota que esta el motor encendido y sigue corriendo hasta los 190 kilometros por hora ( con el ESP desconectado) como cuando estaban nuevas las NGK...espero sirva de algo saludos a todos.

I'm going to install new spark plugs. Can someone tell me which ones I should use, Platinum 4's or factory cooper? 2008 Patriot has 88,000 miles now and it's starting to run a little slugish. I'll put up a picture of the old spark plugs later and let you know how the new ones work.

I've replaced my wife's Pat plugs with the manual specified NGK ZFR5F-11 plugs at both 30, 60 and in a month 90k. This vehicle has got to have the easiest plugs to change. DO NOT pay the dealer ridiculous rates to change these! Just go to Autozone, buy the plugs and some never seize, let your engine cool off completely (don't want to strip the aluminum head) and swap 'em out. You'llbe done in 20 mins and wondering why anyone would ever pay the dealer to do that!

Hmm, this thread looks pretty dormant. I just put new NGK platinum plugs in my Patriot. I was at 80,000 and I'd changed them once before around 37,000 if I recall correctly.

Wouldn't have gone with platinum but that's what VIP had listed for OEMreplacements. So, put them in and they're running fine -- a whole 50 miles so far.

Anyone else use platinum plugs? How do they stand up? Only cost $10 for the 4 of them so I see no reason not to change them after another 30-40 K.

I only noticed one problem changing them -- the old plugs (the ones I replaced at 37K) came out surprisingly hard, and they resisted most of the way out. I used anti seize on the threads, and indeed they didn't seize, but in my experience (days of 10,000 miles plugs and cast iron blocks) the plugs came out a lot easier -- break 'em loose and out they'd come. In fact the new ones went in easier than the old ones came out. Any thoughts?

use standard spark plugs.they work just fine ,save your money.i have 2 patriots and i use reg. autolites and they work great.

I put NGK G-power (Platinum) in the other day, the Jeep runs just fine. Copper cores are good but wear out in 40k. The platinums should last 80-100k easy. But make sure you gap them (.044), that could be why you hear some bad things about platniums as people think you shouldn't gap them (mine came out of the box at .035), buy ones that are "gappable", and you will have no problems.