Customer Ratings & Reviews

I cannot say enough good things about Amsoil, just buy/use it. It is the only oil I use in all my vehicles/equipment.

Best oils, best customer svc.

Best motorcycle oils I have ever used. We will continue to use over and over for our Harleys

Seems great. Last year I used Redline. Wanted to change this time. Looking to compare them. The oil, primary, and the tranny. Will find out soon; first long ride is Rolling Thunder over Memorial Day.

This product is the best in the USA. The heat ratio for Harley Davidson to be controlled in the State Of Florida is very important and demanding. Well this synthetic V Twin oil 20 w 50 out does in performance and heat and engine wear. I tested just about every oil that is produce that withstands all odds. The oil I tested, was lucas, Mobile 1, Harley Davidson Oil. Well Amsoil out ranks, out performs all of them

My Harley love it, This time I used the tranny oil and the final drive oil !! It awesome !

I use AMSOIL in everything I own, fast service, saves money and motors last longer. Best oil out there!!

Friends we teach civilian and our Military riders the skills and techniques used by our Nations Top Motor Officers. And I can tell ya it gets plenty hot in the summer heat with surface temperatures on range soaring over a 100. Our air cooled motorcycles, wet clutches and brakes don't stand a chance. That's why we never use anything but Amsoil products everywhere! They're tried, tested and proven. And that's all we recommend them to our students too! If you what to reduce operating temperatures and even thrive in the toughest conditions. You need Amsoil. :-)

this product went into my 2010 harley wide glide, I change oil in it once a year and I am not shy to ride it hard, every time I drop the plug the oil is clean as can be, check filters and has no wear particle that can be seen, amsoil arrests wear regardless of application. will never use any other brand other than amsoil

I do a lot of full services on all make of bikes, all my customers love what amsoil does to there bikes . they really enjoy the quietness of the transmission oil when shifting.

Use in all; primary,crankcase, and transmission_for last 13 years, product is absOlute!

The Harley dealer recommends it and I started using it in 1975 and have been very pleased every time on everything I have used Amsoil.

I have used the 20/50 synthetic in several of my Harley's over the years. In fact, long before it was called VTwin oil. Motor runs smooth, cooler and keeps everything humming along.

Tore down my big twin for maintenance at 90k...virtually no wear on cylinders or pistons...amsoil is the only product I've used since buting the bike new...amazing antiwear capabilities

I use this in a 1340 evo, 2011 flhtp and 2017 flhtk. The motors run cooler quieter. I change at 5000 mi intervals or 1 yr.

I've been using AMSoil for years and don't plan to use anything else.

20/50 AMSOIL I have been running in my 2006 streetglide since it was new rebuilt the motor last riding season it still look new on the internal parts I have a 121000km on the bike and 10.000 km on the rebuild motor. Awesome product yes I do recommend AMSOIL to my friends ??????

As the mechanic for the local Harley Group...they depend on me to provide and or recommend great products to keep all our bikes running great...Amsoil products do just that

I've been running this oilimmy Harley's for 15 years without any issues.

The All around performance of the engine.