^ We need to have a long discussion over many shots of espresso. My fingers are going to fall off.
Grew up poor, have been fixing and working since I was little. Many 100k miles under my belt. Oil/filter change is 45 bucks, filter inspections, monitor mpg, All cheap insurance. Again, Can you explain why BMW delaships sell non-certfied preowned cars with <50k?
Never needed UOA!
However, I have evolved with the oil. Use to do 3k on Ford Ranger Pickup and up to 8k HWY on e36 328is. With the turbo I say about 5-7k.
Being more stringent than manufacturers recommendation is a good thing.
Again, when are you going to change your transmission oil? If you have a slush or DCT, your BMW recomended intervals are what? Forever?
