Customer Ratings & Reviews

I just changed the primary oil after using Harley Davidson oil and I have to say the clutch engagement is super smooth now.

AMSOIL 20w50 v-twin engine oil is the greatest. I will use nothing but AMSOIL products in my vehicles. I’ve been using 20w50 v-twin oil in my Harley’s for over 13 years with confidence and no issues.

We get our clutches hot. Other primary oils stink. Some smell downright bad. AMSOIL Primary Fluid smells sweet, even when hot.

Love this stuff!

This is the best I have ever used

This is a great product for HD Motorcycles

Great stuff. Have used synthetics in my Harley for 20 years with positive results.

Using it in all 3 places.

When changing the fluid at 5,000 miles oil still has clarity not as dirty as factory oil. Neutral is easier to find and shifts are smoother.

All the research I did recommended this fluid over the rest.

Keeps everything moving smoothly for those time when you want to dump the clutch and roll out.

Love how my motor sound running these products

I use Amsoil products in all 3 holes on my 1998 Harley-Davidson road king classic. The bike has a 112,000 miles on it,but still runs and rides beautifully

Good product and good price now i use them for ever

Excellent protection

I recently changed my 2015 Harley FLHXS to amsoil in all 3 holes. It's cooler weather now so I can't really tell if the engine is running cooler as others have said. I can attest that my transmission shifts better and less clunking when dropping into 1st gear. Either the bike is happier with the amsoil granny lube or the amsoil primary lube. Either way I am very happy with the amsoil products for my bike. Is it possible that lubrication change makes it feel easier to back the bike up? Doesn't make sense but it sure feels easier to back up.

Works great in my ‘08 Road King. Primary runs quieter now.

good product little pricey

I recently switched to Amsoil from the Red stuff and I love it so far. I replaced the clutch plates in my Road King and did a 3 fluid change and again at 1,000 miles I swapped the fluids and they were still clear and functioning great. I plan on regular service intervals from here on out.

I use only the best in my vehicles, V-Twin synthetic works great on my Streetglide. I use Amsoil in both my trucks and my wife's SUV. Never have internal engine problems. Thats a 02 and 08 trucks and a 2011 SUV. Cant go wrong with Amsoil.