2013 e92 M3 oil consumption

[basler]

I have an e92 M3 with 19k miles. I've only had the oil changed at the dealer and after they switched away from the castrol M oil to the new stuff it started using oil. Previously the engine never consumed oil and now it's consuming at least 1 liter per thousand miles. The head BMW mechanic said normal on the s65 is up to 2.5 liters per thousand miles. Whaaa?

Anyone know what's going on?

Thanks

[pbonsalb]

You might add that much in a 5000 mile oil change but not in 1000 miles.

[wfdeacon88]

I'm at 116K miles and I go a full 5K miles and maybe will drop from the top line just down a little. My car has been using LiquiMoly for most of it's life...


You've confirmed no leaks? like OFHG?

[romero1990]

you might want to find if there is any oil leak. Dealer should not make such stupid mistake. But I have seen improperly tighten filter cap resulted in seeping


I have been using BMW's 10w-60 for the past 10K(2 changes), barely any consumption. But my previous castro dropped 1/2L after 5K+ miles. It is really unlikely the oil being the problem

[basler]

Thanks for the replies.

Dealer confirmed no leaks but I'll bring it back and ask them to double check especially OFHG.