[GEOS07335i]

I have a 2008 E93 335i. Although I've had it for a year and a half I dont put that many miles on it. It's a weekend car and I work from home.

I bought it as a project on the cheap and have done a lot of maintenance on it.

Vanos Solenoids, new plugs, new VCG, new breather and PCV valve, coils, index 12 injectors, new post cat O2 sensors, recent oil change using Mobile 1 0-40. I have probably put about a 1,000 miles on since doing all this maintenance stuff and the performance goodies and just the other day I had a low oil indicator light and I put another quart of oil.

I dont see any visible leaks of oil, no white smoke, no oil in coolent, no black smoke out exhaust(at least not anymore). No visible leaks of oil in the VCG tray.

Any ideas? Also Is mobile 1 0-40 have issues with oil consumption issues with our cars?

Any recommendations on what oil I should be using if assuming no leaks besides Mobile 1? In other words if your car consumes more oil than normal is there a different viscosity of Oil I should be trying?