I am not at all impressed with synthetic oil, Ive tried amsoil,M1, and spectro platinum and the all seem to make the valve train louder, its like the engine allready has 100k on it and i anly got 20k, went back to HD360 and every thing has quieted back down now. any of you dino oil guys now if there is a better dino then the HD360? Just wandering.

 

Are you trying to start a fight or something? You're gonna get all the crazy synthetic guys over here going after the insane dyno guys...

Good luck with the oil, man.

I'm running HD Dyno in one bike, and Amsoil in the other. I dynoed one of my bikes with HD dyno oil and then again with Amsoil. No difference in power or tq. I didn't notice a sound difference either (07 Sportster).

I'll bet they both have advantages and disadvantages, but both seem to lubricate the engines fine, which is all I care about.

 

Have you tried Extra Virgin Olive Oil?

 

Synthetic makes my bike run 5-10 degrees cooler and handles hi temps better than dino. Should make it last longer too. Haven't noticed any more noise.

 

Peanut oil smells the best...

 

HD360 is very good...Castrol GTX 20-50 is very good..Havoline 20-50 is very good..the Texas heat is very hot as you know..change @ 2500 miles..I'de run Royal Purple in the summer and listen to the valve clatter but your motor should last a long time with any of the others.

 

Who cares? This is your first post. Nice introduction...

 

My bike runs cooler with the syn. I also think because you get more engine wear when starting than running that the coating syn. leaves on parts saves engine wear. But folks rode bikes many miles before syn. came along.... I am personally against running the 20/50W syn in all three holes, but that is what the local Harley dealer does. I think the heavier 75/90W gear oil in the transmission and chaincase is the way to go. Others on the forum swear to the SYN 3 or 20/50W in all three.

 

you are right about many miles before syn came along,i had 120k on my last hd when i traded in on my new dyna and it had regular old dino oil in it from day one. I had been reading all the hype on synthetic and how it will even grow hair on my bald head etc.etc. so i tried it on my new bike and the engine sounded a little sloppy. ihad later read that the syn was thinner than dino. I switched back to HD360 and the solid feel is back. I guess people think there bike will last forever with syn but i hate to tell ya that it is a machine and will will wear out no matter what oil you use and most people will never see that many miles on there bike before they trade it in or ever see the outcome of there over priced miracle oil. Just my opinion anyway. Hope this dont offend anybody.

 

Syn oil ain't "thinner"; the viscosity range for syn and reg'lar oil is the same. Plenty of reports on the noise issue, so it prob'ly is real. Anybody know (not have a guess) on why?