Customer Ratings & Reviews

I use this oil in my Harley Davidson. First time I used it in my 2013 Street Glide FLHX 103ci motor just got it back from putting a stage 4 Racing Kit in it and put almost 46.000 miles on it in 3 years and used the 60 weight full synthetic in the motor transmission and primary and changed it every 5000 miles witch didn't take long. It tuned on the dyno at 112 HP and 121 pounds of torque. After spending all that money on the engine I won't it a oil to keep it new inside with no ware on the parts and that's what I got from AMSOIL. Now I own a 2017 Street Glide 107ci and had some work done on that motor also and it is a BAD. It pulls the wheal 1st 2nd and 3rd gear and don't Know when to stop running. After the break in oil was ready to be changed I also had the motor work done on it also and had them to put the best in it. So Y not use the best oil so I had them put 20w 50 in all of Motor Transmission and Primary. Now I just turned it over to 4000 miles on the engine now after are last trip and I don't baby it I run it on the Interstate 80 85 90 depends on how the traffic is flowing and I will fall in and roll with it with no worries about my engine because I know its being protected and staying cooler and no ware and tare. Also the shifting is quitter and smoother and the Transmission like the Engine smooth and no ware and tare. Now I'm fixing to order me some AMSOIL because it is getting close to my oil change and don't forget about there Oil Filter It does the Job that no other filter can and that is all the bad stuff don't get through keep that oil Pure.

With all the lubricants out there, and all the claims how do you know you're getting the best protection. I use Amsoil then I know I'm getting the best protection.

I started using AMZOI: products a few years ago, signed up as a preferred customer and I am a true believer in their products My wife and I each ride Harley's and feel the AMZOIL full synesthetic lubricants are the best on the market. There are two things that will cause an engine to fail, heat and friction. Using AMZOIL is one of the best ways to prevent friction and protection for heat.

Keeps my bikes engine, trans,primary running smooth and cooler

After my initial break in of my bike, amsoil was introduced . Here in central Florida it gets really hot in stop and go traffic. In conjunction with my oil cooler and amsoil 20w-50 , I have piece of mind that my bike is well protected. Thanks amsoil.

I have been an Amsoil Preferred Customer for many years ,I use Amsoil for all of my vehicles and equipment. I have never had a single oil related failure, or any failure for that matter. I just did my first oil change on my 2017 Street Glide and noticed a difference right away in the running and smoothness of the engine. My only wish is that Amsoil will put together a "Kit" for the 2017 Harley Davidson Milwaukee 8 owners. We use 4.5 quarts of crankcase oil instead of 4 quarts. Help us oil Amsoil !

What I noticed immediately was how much cooler the motor runs. I have used this product since my bike was new and won't consider using anything else.

I use this in both my wife's and my Harley Davidson motorcycles.Very good oil

I've been using this oil ever since I bought my 2003 fatboy I probably change it to often but it is your engines life blood I still change it by 3000 miles and looks like you just poured it in ! Love this stuff!

I have used Amsoil in my motorcycles since 2012, and have experienced smoother, quieter idling engine, smoother shifting and better gas mileage. I currently own a 2017 Indian Roadmaster, and have not been disappointed with Amsoil products as I'm getting the same results in the Indian, plus it seems to run cooler. Thank you for great products.

I purchased the 20w50 for my 1999 Harley Davidson Dyna Wide Glide. I will only use Amsoil in my motorcycle. It is the best oil I've ever used and I have used many other brands. I am confident in its ability to never break down or fail for any reason.

This oil has the best resistance for heat and distance. Runs my motor at least 10 degrees cooler than any other. Motor runs quiet, shifts smooth, oil does not break down under pressure. If you have any questions about its performance hears my answer: I have a 2001 Road King with over 200,000 miles. I rebuilt the top end at 124,000 miles. So the bottom end and the gear box are all original (200,000). I ride it everyday. I don't baby it. Oil change every 4,000 miles (Tranny every 8,000). ANY OTHER QUESTIONS?

Great product - engine works the best with this product over others I have tried.

I've been using this product for my Harley over the years, and I find it works better than some of the other oils I tried. Although it would be nice if Amsoil would bring down their prices.

Easy pore bottles, great oil for our erratic climate changes.

I've been running Amsoil in my motorcycle for over 10 years without any problems. My dad has been running it since the '70's from dirt bikes to Harley's.

I've used this oil for my Victory for a few years now and the air cooled beast runs cooler and smoother. Best oil on the market.

Keeps the engine cooler

The only oil I put into my Harley Davidson.

Put this in my 2014 cvo breakout