What engine oil y'all running now?

[ekrampitzjr]

Bought a bike back in 88, changed the oil as soon as I got it home. When I pulled the plug, oil came out like hot water. That's what happens when you put car oil in a motorcycle. Destroys the oil in short order.

Red Line, which makes only full-synthetic oil, has a special 20W-60 heavy-duty powersport oil just for V-twin motorcycle engines. Really.

 

[Bill]

Went to an oil change place that just popped up, and got 5W20 full synthetic for my '08 2.3. I don't know what brand. The truck ran quieter than it ever had before, with more power. Yesterday I got under the truck to check some things, and it's leaking from the oil plug. Doing my own change next time, but apparently it likes fancy oil and 100% dino fuel.

I think it is an additive that reduces noise. I ran Chevron synthetic blend and Motorcraft oil 10+ years ago. I could hear the the valvetrain with the Motorcraft oil. I started running other brands for awhile when Walmart took Motorcraft and Chevron off the shelves for awhile. It is quiet with Castrol Edge, It has some noise with Kirkland. Less noise with 5w-30 than 5w-20.