Customer Ratings & Reviews

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

Only product I use in our Harley Davidson motorcycles. White report says it all, Amsoil in consistanly the best product on the market today.

Runs cooler & quieter

I have a 2010 Harley-Davidson CVO FLSTSE Softail Convertible with the 110 Screamin Eagle engine. Synthetic oil is required for this engine. I've been using AMSOIL 20/50 Synthetic for over 5 years and will continue to do so.

For Hot temp riding, Amsoil 60 is a must.

I made the switch from the H-D oil to Amsoil and immediately noticed an improvement in overall performance and will never switch back to H-D oil! My Honda Civic with 160,000+ miles was really dragging to get going, but after switching my car to Amsoil it accelerates like new again. I have no complaints and will be an Amsoil customer for years to come!

I run this in the engine .trans and the primary.. does very well . The temps are down about 3 to 5% which on a air cool engines is alot....

Running Amsoil gives me confidence I can continue to ride all over the country without worry of engine wear issues. Immediate delivery of every order is another bonus with Amsoil.

Both my bikes.. all I buy. Shipping should be free..

It seems to make the engines run cooler and shift smoother

There's no other engine oil that I would put in my Harley!

I ride my Dyna hard. I recently switched to Amsoil. My bike runs cooler and the valvetrain is quieter than with the former dealer brand. The only thing I wish is that the v twin oil change kit had the choice of black oil filter.