Customer Ratings & Reviews

Très bon produit

As the subject says, it's the only oil I will use in ALL of my vehicles and motorcycles.

Product works well. Box was in bad shape and amsoil was no responsive I lost 1 quart. I am 100% amsoil but this time they let me down.

Worked as advertised. Great product.

I've definitely crossed over the Harley Side in life now that I can actually purchase PRIMARY oil! That to me is something that is now crossed off my bucket list cause I am glad I own a Street Glide! I'll use a decent oil for life and I am glad I have chosen Amsoil as my oil! Good Stuff!

The best product!!!

Using the same oil in engine, trans and primary doesn’t sound right to me so this is what I use and it is the best in my opinion.

Great product fast shipping great price

Every two years Amsoil is part of my maintenance

Was in my kit, great oil.

After putting this in my primary. The clutch engagement was so much smoother and quieter, and the compensator noise was completely gone.

I used it in my 2023 HD lowrider s bike is running super smooth helped quiet down the topend ticking noise and bike feels even more responsive I'm so impressed by this oil previous oil in bike was redline but this blows it away

always use it in my primary on my Harley.

I have less slapping of gears and more smooth shifting.

Amsoil Synthetic Primary Fluid is the best product on the market, primary is quieter, clutch is smooth. 30 thousand miles ridden on this current bike, so far, no issues.

I've used nothing but Amsoil since I purchased the bike. To me it's the best

Been running this from the beginning on my 2021 Harley 30,000 miles. Will continue to use.

Works well no problems

Works Great,helps with clutch slips

No more hunting for neutral.