Red Line 12604 20W60 Synthetic Motorcycle Motor Oil - 1 Quart

A sometimes hard to find viscosity, readily available here at a fair price.

Excellent oil, replaced Aimsoil in twin cam 88, much more quiet and smooth, great stuff

I would NEVER use anythings else on my 2017 HD M8, especially when you have spiffed it up with a race cam etc.

As our summers become longer and hotter, this product has served me well for the last two years. Winters do not get that cold, and I don't ride when the temperature is below 50 degrees.

I put this in my TC 88. Bike runs cooler and quieter.

I changed from 20/50 Red Line to the 20/60 in attempt to reduce heat for our HD 103 during our trips this summer to much warmer area's. I did notice a little decrease in temps, but it really did quite the lifter chatter while extreme stop and go in city heat. In my opinion it worked, but now we are back up north, and morning temps area in the 50° rang I will have to let her warm up longer in the morning before taking off.

use Red Line in methanol fueled race car, Harley Davidson motorcycles, HD pickup truck 8.1l, all the way down to my 35 hp scag. Works flawlessly in all of these applications.

I use it in a 1999 Harley Davidson Dyna Wide Glide (FXDWG) with an 88 Twin Cam engine. This was the first year the of the Twin Cam which was notorious for oiling issues, so lubrication is a big deal for me. I've read up and tested several oils in my 88TC over the last few years. Some steps froward, some steps back, but the Red Line 20w60 was the huge leap I was looking for. It makes my engine run cooler on the 100+ degree California summer days and quieter everyday. The engine is simply happier when I run Red Line. I've since switched to Red Line products in all 3 holes. Red Line 20w60 (or 20w50 for cooler months) in the crankcase, Red Line Primary Fluid in the primary case, and Red Line Shockproof in the transmission. This combination of lubes makes my bike happy and ready for some action. Happy trails everybody!!!