Engine oil Mobil or OEM BMW

Valvoline Restore & Protect is apparently amazing when it comes to desludging engines, and Mobil 1 also has some knockoff that claims the same.

Looking over this old post -- an update: I have since migrated to M1 ESPx2 in 0-20. The price has stabilized at $25gallon, and that made all the difference in the world to me, and is allowing me to reduce my OCI's to 5kish.

I use mobil one ESP 5-30

Mine has had Mobil 1 Extended Performance 0w20 its entire life (aside from the factory fill) and I've had exactly zero oil consumption or lubrication related issues. It still gets nearly the same fuel economy and is as responsive and smooth as when I bought it, no matter if it's blasting up a steep mountain or baking in the heat of summer traffic.

Every 4k-4500 miles with a Mobil 1 5w30-5w40 mix and some liquimoly oil treatment.

I go Mobil one with my Mobil one oil. I run the euro blend in my 2010 WRX because it's high miles turbo so it's 0w-40. Car seems to love it.

I live in Texas so use 10w40 Mobil 1 4t And k&n filter

Mobil1 is available at Walmart for about $25 for a 5 quart jug. I change mine every 6k miles per the manual (used oil lab analysis shows that\u2019s more than adequate for me), and when I had a rod snap at 114k miles, all the bearings looked new, so the oil was clearly not to blame.

Nah you're fine. BMW engines are known for using some oil. Even 1l on 5k km is not much, even the dealership considers this as normal.

Mechanic put in mobil1 FS 0w-40. Car went into limp mode exactly at end of trip. engine was running rough and would not go above 40mph. Engine light was on. MB dealership denied warranty for an exhaust issue, stating the Mobil 1 oil (mb229.5) did not meet their required specification (mb229.51).