I use Mobil #1 in the engine and Red Line SPHD in the gearbox! Bel-Ray works best in the primary for me! Formulated for Primary use only! My son runs Red Line in all three holes and swears by it! Never used Amsoil in anything, so I have no opinion!

 

Thanks guys this is the first oil thread I've read that didnt end up in a pissing match.

 

i went with the redline because my dealer stocks it. 10,500 miles with no complaints.

 

I use AMSOIL in the engine/primary and Royal Purple 75W140 in the tranny. Ive heard nothing but good things about Redline and Spectro oil if that helps.

 

I did Redline HDSP (aka "Pepto Bismol") in my trannys. After reading Amsoil's "White Paper" on their extensive motor oils tests, I'm running M1VT in the engines. Happy Camper...the Redline made noticeable shifting change/ease in the RKC.

 

Never mind. Found it with search

 

Here's 40k miles of Amsoil.




Everything looked like a severe lack of lubrication. The compensator springs cut right through the cup and it came apart. Yes, the bike went down, locked it up tight. Bent flywheels, bent trans main shaft. Good thing for extended warranty. Not the first time I've seen this with Amsoil or Redline, this was just the worst case. You would swear there was no oil at all. First time I saw it I thought the customer ran it without oil, then it happened over and over with the same oils. Thin synthetics are hell on the 6 speed trans too.
Since new my bike has had plain old Harley 20/50 in the engine, form+ in the primary and I just switched from form+ to belray gear saver in the trans 12k ago. Everything changed every 2500-3000. It's been severely abused its whole life. I just tore it down with 40k on it and everything looks like new. I love the heavier oils (gear saver etc.) in the 6 speed. Shifts really nice, even powershifting or not using the clutch and it's the only thing that makes them hold up.

 

I have never read anyone accuse Redline trans oil of being thin.
(myself, I put the bottle in hot water to make it more fluid so it will pour easier)
There are too many guys on this board that have many miles of experience with this
excellent lube. (Redline)
Also, I've never read anyone choose Harley oil or lube over any quality synth.
Either you work for a dealer or you have stock in an oil company. My $.02.

 

I have always run amsoil in all my bikes. The dyna with a bit of gear oil in the tranny, makes it smoother at cool temps bike seems to like it. Plus its pretty easy to come by and discounts if you know the right people.