Schaeffer Manufacturing Co. 0707-012 Extreme V-Twin Synthetic Plus Racing Oil 20W-50, 1-Quart Bottle (Pack of 12)

This is some of the best oil I have used

Put this oil in a 2013 Harley Davidson and a 2014 street glide. They run better run cooler and got the best protection in the market. Had amsoil before this oil is way better. Highly recommend this oil

I don’t believe in switching oil in my Harley‘s. I always used Amsoil A trusted friend and mechanic told me about Schafer’s V twin motor oil. He switched exclusively to it in his shop because he was sold on it. He said that he was surprised to find how much quieter the motors ran and how much cooler. Uses the transmission oil also. And found that it shifted much smoother and quieter. He told me to try it one time. So I did. And even I noticed the difference in noise and the heat of the motor. I have been using it for several years and wouldn’t use anything else now. I was in Sturgis last year. Needed to change the oil in my 2016 Dyna. We rode looking for Schaeffers. Couldn’t find it. So I bought some of the Amsoil that I used before. I could notice right away more engine noise. And I could feel the heat between my legs after I changed it. I believe in Schaeffers V-twin oilI also have a 2008 Dyna. With 105,000 miles on it. And It is still quiet and strong. The first half of it’s life I ran Amsoil. The second half was Shaeffers.I believe Amsoil V twin is good also. But the Schaeffers is definitely quieter and cooler. Which has got to be a plus. It has the needed zinc for the roller bearings and everything that Harley calls forI recommend it.

This oil has Performed well and has protected my Harley twin Cam and M8 engines. Expensive, but it's worth it.

First time using in my harley used for years in racecars great oil

This is good oil. Seems to last pretty good in the heat of the summer and keeps the valve train running quietly. I run it in my Harleys and an old Gravely rider that has a Kohler on it.It is expensive but air cooled engines generate a lot of heat.Two days from order to delivery. I just received my third case of the 20w50 and will continue to order.

My motorcycle actually runs cooler with this oil

My Harley runs way cooler, quieter, and has an obvious increase in power. It has made the same difference as going from a 96 cu in to a 103. SERIOUSLY! Here's another tip: E3 spark plugs ... another SERIOUS increase in power.