HD Standard oil or HD Syn 3 or Mobile 1
I have used syn 3, and Ams oil. Ran nothing but Syn 3 in Night train and ran it hard as hell with no issues. put Syn 3 in FLTRX at first fluid change, but have recently switched to Ams oil. I will be going back to Syn 3. For some reason I seem to burn Ams oil, and verified no leaks.
Have never used mobile 1 on HD, but used it religiously in my Vette.
2013 FLTRX B B P, 11 in Paughco RG Apes, V & H Monster Round, American custom dual header, SE high flow air intake, 8.5 in Klock Werks shield, Monotubes up front, lots of blacked out chrome parts, and the list goes on.......
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