Do it at 175k

Its every 105k on the belt.

You had it done at 70k, so that means its good for another 105k miles....putting you at ~ 175k miles on the truck.

Changing them out TOO early is kind of a waste...it only makes a bit of sense if changing the waterpump anyway, etc....as you're already in there.

If the water pump was changed at 70k too, you should be in good shape til ~175k. If not, well, its not worth changing the water pump IN CASE its going to fail....as they don't ALWAYS go on you, etc.

Besides, if the pump does fail, it doesn't take out the engine with it like the belt snapping can....so its worth risking.

If you are made of $, and are paranoid, sure, you can do'm both early for peace of mind, but, fiscally, it makes more sense to wait until its due.


The mechanic saying to change it at 125k is probably just trying to get you closer to the 105k interval/make a few bucks himself, etc.

You can't really see the belt w/o opening the front up anyway....so unless there's funny noises or timing issues, etc indicating a slipped tooth or something, he's most likely just saying it was due at 105k because that's what the book says...and you're at 125k, etc.

I hope that helps!