12-29-2013, 01:00 AM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,454
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Not Ranked
The grade of oil is not determined by Mobile. It's determined by SAE. SAE doesn't say anything about the size of the molecule, it's all about viscosity measurements.
" By 1926, there were six single grade designations in SAE J300. Such oils, identified as SAE 10, 20, 30, 40, 50 and 60, were graded according to viscosity measurements at 130 degrees and 210 degrees Fahrenheit. "
How Do You Choose the Right Type of Oil for Your Car?
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.boB "Iron Man"
NASA Rocky Mountain TTU #42
www.RacingtheExocet.com
BDR #1642 - Supercharged Coyote, 6 speed Auto
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