Patriot is 7 yrs old with 28K miles on it. I live in Vegas so I'm concerned the heat will do to the hoses.How old is your Patriot? How many miles? Belts wear physically and need replacement. Today's hoses are such high quality that I generally do not replace them until I see signs of degradation. I have farm tractor hoses well over 20 years old still doing fine (Maintained well - coolant changes, etc.). Of course, everyone's situation is different - age, mileage, etc..