funny, i have run synthetic in allot of bikes and everyone of them became a ticker basta*rd from hell. Just tonight i was yacking with a tech at the dealership about this and he too just went back to dino oil with a few extra changes becasue of the noise. My M8 with dino in it is much more quite than with syn 3 or amsoil for that matter. The engine with dino gets a bit warmer but other than that you are hard pressed to know the difference. Also i have been running dino oil in all our cars for the last 10 years, mine has about 200k klm on it now and it runs as good as the day i bought it and never had an issue, i change the oil regular like and bobs your uncle. I know all the tech and so forth on synthetic i am not apposed but i wonder sometimes if at the end of the day you take care of your ride does it matter? Sometime i think synthetic was created for all the people that could not be bothered to change their oil.

just a though.

 

They are quieter with dino than syn, aside from that only real difference I've seen beside price per bottle is syn allows a longer interval between changes. Run dino in mine.

 

 

 

also known as Pink Slime...goes perfect with Extra Virgin

 

 

Is Amsoil an Amway product?

 

 

Good points. My concern with dino is how hot these engines get. Not a concern in a car engine. Dino oil heat rating is a fair amount below synthetic. For that reason I will stick with synthetic.

 

Perhaps I'm wrong (wouldn't be the first time), but I don't believe HD would even recommend HD 360 20w-50 if it would cause them engine failure ($$$$$$). I run a fan assisted oil cooler. Absolutely the best thing I've bought for the bike. Definitely runs cooler.