So the dealer says the OEM plugs should last you up to some 100k miles or so, and I'm used to having them done about every 30k or so. I'm approaching 60k on the original plugs, and I'm thinking I should change them soon. What mileage did you guys change them at and did it do anything for you as far as performance/idle/anything worth mentioning?

 

i did mine at about 35k

 

Did it do anything for you?

 

not really, but took something off of my mind. But i think it should be changed before 50k though. Mine were plretty much gone, but i rip it everytime i get a chance.

 

So do I. Esp lately since I've had Church's do my uprev. Guess I have another thing to do.

 

i changed mine at 36K

 

70-75k they say 100k but im a mechanic and i start to see them break down at about that mileage. im at 45k and its nice and crisp all the way up

 

100,000 Km - (60 K miles for you foreigners).

 

i did mine at 30k and at 70k, first time the back 2 were caked in oil, the second time around they were clean and still looked good

 

70k - 100k.. these arnt the old school plugs anymore..

- Eric