Originally Posted By: oil_film_movies
Originally Posted By: gtmaster303
Exactly what the title says. My BMW Burns a quart in between it's 15k intervals. Does that mean I can go longer because fresh oil is added?
If its only 1 quart, thats not much. No extension. Now, if you were putting in 3 quarts, then 18k wouldn't be out of the question in my opinion. Adding oil does replenish detergents, anti-oxidants, ZDDP, dispersants, etc., so yeah. Its a matter of how much.
As it is, I think BMW did make a change in what it recommends.
https://f30.bimmerpost.com/forums/showthread.php?t=868291
and they went to 10k miles (oops moment for them...). Reputation for too much oil breakdown I guess.
Rule of thumb: Go with 15k oil changes if you add at least 2 quarts of oil as you go.
Go with 10k mile oil changes otherwise.
My car is a 2012, technically that bulletin doesn't apply to it
The long intervals actually don't scare me, considering most oils would easily be up to the task - even non-approved ones
Car has been running like a top, 95k and counting