R u guys burning oil?

[elborhamy]

Originally Posted by dcaron9999

What brand of oil are you using? What viscosity do you use?
N54 or N55 engine?

I track my N55 a lot, use Castrol 0W40 European Formula, and have noticed a pattern.

When the oil starts breaking down after several hard days at the track, I noticed that the viscosity tends to get thinner. The oil gauge may then start indicating 1/4 - 1/2 liter missing. If I top off the oil to indicate a full condition again, I may get another low oil condition again soon thereafter (1-3 weeks of errands).

This pattern starts happening maybe after 5000 Kms on the same oil refill. When I replace my engine oil, the slight consumption stops completely.

I noticed the old oil is thinner than the new oil. I never ran a UOA to truly determine whether my older oil was still good for more mileage...

Food for thought ....

Thanks to our wonderful e-dipstick, their is no way to monitor precise consumption of oil.

That exactly the same happen to me in my 316i, after exactly 5000Km

[smrtypants44]

I usually have to put a quart in once per oil change interval.

[dsocold]

mine wastes 1 qt in 5,000 miles then i usually change the oil every 5k anyway.

but i do a lot of heavy driving so i believe this is normal