Customer Ratings & Reviews

Began using Amsoil 20W40 in my Indian Thunderstroke 116 (factory 116 with oil cooler) after trying a few other oils during the first 10K miles. By comparison, when using the OEM Indian oil, I experienced what I would call significant valve train "noise" at certain RPMs and also very noticeable transmission noise. I tried Castrol V-Twin full synthetic 20W50 during the summer here in Florida which quieted the valve train noise but after less than 1K miles I developed one sticky lifter that wouldn't pump up until the engine ran for a few minutes. At the suggestion of a friend, I started using Amsoil 20W40, formulated for Indian and Victory motorcycles. WOW, what a difference is all I can say. I immediately experienced a much quieter engine and transmission. The valve train noise is gone all together and the transmission is super quiet and shifts like butter. After only a few hundred miles with the Amsoil, my sticky lifter issue resolved itself completely and has not returned. I now have 17K on my bike and will use nothing but Amsoil. I highly recommend Amsoil 20W40 to all owners air cooled Thunderstroke engines, it's literally the best I've ever used.

Excellent produit. Livraison très rapide. Prix raisonnable à l'achat de la carte de membre.

I've used AMSOIL for years and wouldn't use anything else in my bikes

Great product

We use this for all of our air cooled engines

Have carburetor 95 Evo Electraglide. 88,000 miles. Change oils at 5000 mile interval. Sent in oil sample in October. All tested out good.

Excellent product

Use this in my 2015 Harley from the time I got it new.

This is a great oil for my M8 engine. I have had no issues with it and appears to hold up as well as any Harley oil for less cost.

I have been using Amsoil 20W-50 in my 2004 Harley since new. I will continue to use this for my oil changes .

I have purchased a 2017 HD Ultra noticed a big difference on my 103 and have purchased the product for the new bike

I use Amsoil in everything I own , car ,truck and motorcycle

Since adding this to my crankcase compared to Harley Davidson SYN3 it is quieter when engine is running.

The only oil I purchase for all my "customer" LOFs and for my own bike as well.

One week ago and approximately 450 miles I installed a Fueling camchest. While removing the necessary parts felt the oil had lubricated these parts in such a way that their was no wear signs on any of the replacement parts. The last 4 oil changes where done with Amsoil and the bike has 25500 miles Highly recommend.

Love Amsoil

Will continue to us Amsoil products in my 2020 Harley Davidson Road Glide. Awesome customer service as well!

Been using the 20W50 in all three holes of my Harley. No complaints in 22K miles, seems to work fine in the primary, transmission and hot rod, (cammed 131"), motor.

Hands down the best oil. Wontvrun anything but AMSOIL

Really Good Oil,i use in motor and transmission for my Big Dog K-9.