Author Topic: 1991 M42 oil specs (Read 3399 times)

dlmrun2002 · « **on:** February 25, 2007, 06:55:16 PM »

What is the weight BMW calls for in the 91 M42 motor?

Thanks..
DLM

magnum2066 · « **Reply #1 on:** February 25, 2007, 10:24:57 PM »

It depends on your weather + temps. Where do you live?

If you still have your manual, it gives you a chart of oil weights and operating temperatures.

Choking Hazard · « **Reply #2 on:** February 26, 2007, 08:23:29 AM »

http://www.m42club.com/forums/showthread.php?t=824

dlmrun2002 · « **Reply #3 on:** February 26, 2007, 09:11:19 AM »

I'm in New York-an hour north of city..... Getting a rebuild back soon. I heard it is best to use mineral oil when you have a new engine so it breaks in better then switch to synth.. Ever hear this claim before?
DLMRUN

badboypolar · « **Reply #4 on:** February 26, 2007, 11:08:45 AM »

I use non-detergent straight 30 weight. 500 miles only and then change to whatever oil weight you want to use.