I'm sure there are, in fact I happen to know one too. if your wondering about how good it was
a oil test was done on every major oil a few years back, in the syn, department, the number one oil was Shell rotella t Syn, number two was amsoil, I don't have that test any more lost it when the PC crashed some time back. but there was a big gap between the Shell/ Amsoil and the others, mobil 1 was far down the list along with the Castrol's Syn.
you can't go wrong with Amsoil, you really can't go wrong with the SHell Rotella T syn. and it's much less price wise
some walmarts now sell the shell rotella t syn very very reasonably priced compared to Amsoils (darn near half the price of our cost on amsoil in fact)
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