When have most of you change the plugs miles wise?

 

100,000 its in the manual

 

Thank you guys/gals. I only got like 70 on my truck but **** it... Why not....

 

Do what you want, but unless you really need to, there's no point in changing them ahead of schedule. The spark plug is one of the most durable parts on the engine. They last a long time. 100k for me. In fact, at my age, I might let the next owner deal with the grief. I'd pay more attention to the belt, water pump and the oil. A worn belt will strand you in the middle of nowhere. A spark plug will cause a misfire.

 

Besides changing 16 sux. Lower fronts really sux.

 

I don't go more than 75k before changing them. Limits the corrosion you have to deal with, especially with the ones on the exhaust side.