Customer Ratings & Reviews

I use Amsoil in EVERYTHING!

I changed the engine oil on my Harley an the engine runs 20 to 40 degrees cooler than with the stock Harley

I am supposed to use 20-40 but I find the 20-50 makes a big diff in how the bike sounds and shifts. Been using Amsoil for years. Nothing else will do.

I regularly run AMSOIL 20w50 and sae60 in my Harley's. I also run an oil pressure gauge as well as an oil temperature gauge and AMSOIL is the most consistent I've ive come across.

Every time I use anything Amsoil I notice an improvement in motor function in every way.. truck, bike, boat chainsaw; if you know your motor you'll know the difference Amsoil makes.. You CAN feel it!!!

I only run Ams oil in my bike.

I've ran this oil in 2 identically set up Harley Davidson Twin Cam engines. First one Amsoil was added after my factory warranty was up at 40,000 miles. By the time it had 75,000 on it,it was using a quart every 2500 miles. The other engine has had Amsoil 20w 50 in it since new. It currently has 128,000 miles on it and is now using 1 quart every 5,000 miles,plus the heads have never been removed! I truly believe that it is superior to everything on the market.

Change over from HD oil, better quality and price. Got about 2000 miles oil still looks new.

Bike shifts better. Oil stays clean longer. No problems at all. Good stuff

I wouldn't use anything else in my Chieftain. Engine runs cooler and quieter.

Does the job with extended mileage.

I remember the days of sending samples in to determine when to change your oil. As a young man I did not understand why. That was in the 80's. Now the ease and reliability comes to your door step after years of testing and verifying performance. I have convert all vehicles from 59 Chevy to 2013 Roadglide without an issue. Thank You. Willy Veteran USN

I'm a firm believer in amsoil products. I not only use amsoil in my motorcycle but in all of my 3 cars and truck. I even use amsoil in my deisel tractor and garden tractor and trimming equipment. Haven't ever had an issue with any motors useing amsoil

Run nothing but Amsoil in my road king and have used it in other bikes and on friends bikes nothing better imho

Air cooled engine. S fl Heat. Needs straight 60

Everything has been great

I have been running Amsoil products in my 2002 Fatboy motorcycle for the last two oil changes and the bike runs 10-15 deg cooler as measured on the gauge

This is the only oil & fluids I put in my HD. My engine temps are cooler. My transmission shifts smoother.

I have used 20-50 Amsoil for over 17 years. 2 of the bikes have had over 90,000 miles with no oil consumption or failures,my present bike has over 30,000 on it.I use Amsoil only and will keep on keepin on.

Keeps the motorcycle running like new