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I am using HD Syn just to avoid any warranty issues. I have been a fan of AMSol in my old bike but have been looking into Redline 20W50 transmission and primary fluids. The specs I have seen are equal or better then Amsoil. Anyone have any experience withe redline products?
I use Redline Heavy Duty Shockproof in the transmission. Have been doing so for well over a decade.
I have experimented with MANY different fluids in the engine and primary, but always end up going back to Redline in the engine.
In the primary, on some bikes I use the HD Formula + and other bikes I use the Syn3
One experience I had back in 2005 or 6 was:
I had taken my Road King into the dealership for a warranty replacement of my clutch cable. During the replacement they had drained the trans fluid. I had left some Redline HD Shockproof for them to put back in when they were done.
I got the bike back, rode about 60 miles home. When I got home the bike sounded a bit louder than normal...my thought was they had used something besides the Redline I had left for them.
I pulled the trans dipstick.
They had forgotten to put ANY fluid back in the trans!!!
The Redline HD Shockproof it so thick/clingy, that there was still enough lubrication after draining it that no damage was done.
I went ahead & put some in it. Rode that bike another 40K miles before selling it.
No issues!
Kevin