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Primary Oil: ATF vs Redline vs Motul vs Spectro Vs Bel Ray vs Lucas
Primary/Transmission/Driveline/ClutchFind answers to general powertrain, primary and transmission. Have clutch issues and need suggestions? Post them here.
I was once told the old Primary Fluid Harley sold before the Formula plus was a straight 30 weight. I've been using Walmarts Super Tech 30 with good results.