I can't speak to it directly however I hear the guy on XM on "America's Car Show" say Amsoil is the only thing to use.
Leo Bricker, owner trucks 3034, 4958
OOIDA 677319
73's K5LDB
Highway Watch Participant, Truckerbuddy
EO Forum Moderator 1+ Years of Service
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Support the entire Constitution, not just the parts you like.