[rfx45]

Originally Posted by RPM90

Think back, when was the last time you heard of BMW engines having problems with extended mileage use? When have you heard of engine problems resulting from a too long oil change interval?

Look a page back?

Originally Posted by zhp43867

... look up 335i carbon buildup, or one of the many threads where higher mileage 335s are running like crap due to the issue. Also search "Direct Injection Carbon Buildup", you'll find hours of reading material. Here's the tip of the iceberg. High quality fuel and better oil than BMW supplies coupled with more frequent oil change intervals should help prevent this from happening:

http://www.e90post.com/forums/showthread.php?p=10395959

http://www.e90post.com/forums/showthread.php?t=447516

http://forums.bimmerforums.com/forum....php?t=1669210

Either way, I think you missed the joke in my post. The quote I replied to stated engineers spent hundreds, thousands, millions of hours into designing and testing these cars as if it never has problems, ever. I mean Ferrari engineers labored hundreds, thousands of hours into the 458 but thing still catches on fire.