Quote:
Originally Posted by Joker_J
at what mile should the fluid be changed?
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A lot depends on how much and how hard you drive the car. I'm not all that hard on a car, so:
For a new car, I like to do the first diff (and trans) change at about 30,000 miles and every 40,000-60,000 after.
For a used car, I will change all fluids within a few weeks of getting the car. If any fluids look dirty, I will do another change in about a week. And then the same 40k-60k for the diff as above.
If you drive hard or use cheaper lubes, you'll may want to change sooner.