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Karl · 03-15-2019

If anyone on here has a GM pickup truck or newer BMW or Mercedes I understand the cars must use 0w20 or 5w20.

Anything above a 20 weight oil will cause the GM cylinder deactivation and cruising speed on the highway to not work/malfunction or operate inefficiently..

And on the BMW and Mercedes general running trouble with the engine.

Maybe GM and Lotus suggest staying with a 5w30 or 10w30 for a reason.

Food for thought.

03-15-2019	#68
Karl Join Date: May 2013 Location: Chicago Posts: 982	Re: Amazon engine oil vs the world If anyone on here has a GM pickup truck or newer BMW or Mercedes I understand the cars must use 0w20 or 5w20. Anything above a 20 weight oil will cause the GM cylinder deactivation and cruising speed on the highway to not work/malfunction or operate inefficiently.. And on the BMW and Mercedes general running trouble with the engine. Maybe GM and Lotus suggest staying with a 5w30 or 10w30 for a reason. Food for thought.