I have 22 Honda Pilot for which I recently changed rear differential oil. 1.92quart is the amount per manual - I poured 2quarts and no oil came out.

Other online videos shows top-off process until oil started oozing out.

I am wondering what is correct procedure ?

  • 1
    Why are you changing the diff oil on a car just over a year old?
    – GdD
    Commented Nov 9, 2023 at 9:26
  • Did you keep the car level during filling?
    – Allman
    Commented Nov 13, 2023 at 7:41

1 Answer 1


I fill my diffs until the oil starts leaking out of the fill hole. The manual for my car says that 'full' is 5mm (or so) below the fill hole, which is impossible to accurately do. So filling until overflow and then allowing the excess to drain out is good enough.

I'd wager that you didn't actually add the necessary 1.92 quarts, as there is usually significant residual gear oil that's hard to get out of those bottles. But you're probably close enough, so I don't think that this is a significant issue, but I'd top it off just to be on the safe side.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .