Trans/Primary - Harley Davidson Forums

General Topics/Tech Tips Discussion on break in periods, rider comfort, seats and pad suggestions. Tech tips as they become available will be posted here.


Old 02-12-2019, 10:30 AM
m1369x is offline
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Default Trans/Primary

At the recommendation of Baker Drivetrain I put Red Line Heavy Shockproof in my trans (put H-D Formula+ in Primary) ,
I've been wondering , Has any one put Red Line in there primary? If I had what would have been the results?
With all this Global Warming going on I may not get out before late April to enjoy my winter mods
Old 02-13-2019, 03:36 PM
Jake707 is offline
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Redline Shockproof in the primary? Hell no don't do that. But if you mean the Redline primary specific fluid, Ive used it before on stock clutches but I usually run Rivera Primo clutches that call for type F ATF fluid. The primary fluid is generally determined by your clutch pack more than anything else. If running a stock clutch then Id say the Redline primary fluid is good to use, If running an aftermarket clutch use what they suggest.

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