To get a pipe wrench in there since the bolts head was all stripped up. Couldnt do that much with the skid plate on.
Ah, ok.
Now to everyone else. The drain plug is 1/2 inch, not 12mm or 13 mm but 1/2 inch! If you use a 13 mm on it you run the risk of rounding it off as 13mm is bigger than 1/2 inch.
Most pan bolts are damaged by the 13 mm socket and trying to remove the bolt by turning it the wrong way. Most people reach under from the front of the car and in this position, due to the location of the bolt, often it get tighened rather than loosened.
I always check twice to be sure I'm not doing it wrong.
Buy a rachet that has labels for ON and OFF, or before you go under the car, set the ratchet the right way, doing it under the car = stripped bolt.
Using the right socket (1/2 inch) and turning it the right way means you will NEVER EVER strip the drain plug. EVER!!
Problem is even experianced people can make this mistake. And places like Jiffy lube, well the staff there is just above moron! But if your a do it yourselfer, the pan bolt should last the life of the car.
In 30 years of changing oil I have never rounded off a drain plug.