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      09-25-2016, 10:01 AM   #21
0w40X1
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Drives: 2014 BMW X1 s28i M Sport
Join Date: Sep 2013
Location: West Texas

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Quote:
Originally Posted by insanecoder View Post
I'd rather focus on the full synthetic oils not the halfies or dino-oil dressed with tons of detergents..
0W thin BMW likes to make its efficiency #s but yea I wouldn't mind a 5W for alil more protection
0w40 is approx thickness to 10w30 at around 70 deg f, and is always slightly thicker. 10w30 10.4 cst vs 0w40 12.9 cst @ 100 deg C

5w40 is thicker at 14.2 cst @ 100 deg C

Widman.com has a graph to play with.