Quote:
Originally Posted by LiquidZ
Correct. Amsoil is a group 4 with ester additives.
Competitors such as Royal Purple, Redline and Motul are all group 5 ester based oils.
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Actually that isn't correct. RP, REdline and Motul 300V only are Group 4 based oils with Amsoil.
Amsoil XL line is a Group 3/4.