Originally Posted by elp_jc
Based on several UOA reports I've seen, it's definitely inadequate IMO. And proof of that is BMW used to recommend oil changes every 3K miles when they were charging for service. And without ANY engine changes, as soon as they started including service in the purchase, the interval jumped to 10K miles
And it's absolutely inadequate for people like me who drive mostly short distances in the city; that's brutal for the additive package, especially the part that neutralizes acids. Everybody has its own opinion, but doing a 'middle' oil change gives me piece of mind
. And will continue doing it (it's my money
It's more like 15-18k miles from what I've seen. Sound ridiculous. I just pay and get mine done every 5-6k miles for cars I own.