Join Date: Jul 2019
Location: Southern Vermont
Castrol makes a semi- Syn. "Activo" and a full Syn. "Power 1" for MC Both are JASO M-2 and API SL. Their "GO!" is also JASO M-2, but API SG. Other than to tout additives, the label reads nothing about synthetics, so I can assume that the GO! is a dino...?
Has anyone tried Castrol? It's reasonably priced by the gallons online....and it's available for similar pricing at my local auto-parts store.
I do wish Rotilla (T6) would re-apply their JASO rating....my Road Star was smooth as silk on that. Feeling the heat that comes off the new Venture, I can't imagine a 50 flows any less efficiently than a 40 in that engine, but I won't mind being corrected...
Seven Stars/Tuning Forks