Quote:
Originally Posted by kyrix1st
Looked at the SDS and nothing. They do emphasize that it is thermostable and is for extended drain interval. Tempted to try and send it in for UOA.
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For example, Castrol 0W40 has a bit lower flash point than M1 0W40, but they use different ASTM. M1 is D92 and Castrol D93.