Alan Peters
Well-Known Member
This study is on competitive gear lubes completed by Amsoil, but under ASTM procedures.
http://www.synthetic-oil-tech.com/Gear%20Lube%20White%20Paper.pdf
Royal Purple failed couple of tests.
http://www.synthetic-oil-tech.com/Gear%20Lube%20White%20Paper.pdf
Royal Purple failed couple of tests.