Customer Ratings & Reviews

Best oil I’ve ever used. I’ve tried almost all brands.

So far running in my 2006 Harley seems to be good

I was having problems getting my motorcycle into neutral until I started using Amsoil Primary Fluid. The motorcycle has responded well to my using separate fluids instead of using one fluid for all three purposes.

Like this product

cluth engages well.very smooth

Engine runs cooker, lasting a long time

Use this in my 13 Harley Davidson. Quiter primary chain. It's also made specifically for the primary. A wise choice if you want your ride to last.

I just it in my 2005 Harley, it was making a little noise and after running it for 4 hours I could not hear it. I started using it after I bought a caroff a person who was using it in a 2005 Mercury and I am still using your product.

Only oil I use for my harley davidson. Holds up to the extreme temperatures. Highly recommend.

motorcycle great product

Been using Amsoil for years. Use it in all my vehicles and even got my girlfriend too use as well.

Major improvements

Started using Amsoil when I bought my first Harley 6 years ago then changed all my vehicles over tok it I love the oil and won't use anything else

I use Amsoil in all my vehicles, very pleased and will continue using when I buy new ones.

I use this oil in my 2014 Street Glide and change it like clockwork every 5,000 miles. I dont have anything bad to say about it. V

Nice having a dedicated oil for the primary It does quiet it down

Used to use Mobil 1, switched to the Amsoil primary a few years ago and love it. Definitely recommend.

great product! Have been using it in my two HD motorcycles since the fluid was introduced and have no issues.

I have used Amsoil products for years and have never had a lubrication related issue. Amsoil Primary Fluid is another great product.

I have been using Amsoil in most all my Vehicles for over 12 years. Their line of products are phenomenal. An their signature Series take the worry out of those absent minded young ones cars who just get in the car and drive as long as it has gas. LOL!