Been using Amsoil since 2000, never had an issue though my Yamaha RS started leaking a lot when I changed from Yamalube. Under warranty Yamaha needed to open up my engine and changed all gaskets in the process, I brought then Amsoil and the bike never leaked again. Can't give a 5 star due to two issues; 1-The company lost my original registration and preferred membership and 2-the price is a bit too high!
Love the product, far superior to any lube currently available for V-Twin bikes. Gripe? Have a big one. Advertise "free shipping" on orders over a certain threshold, paid for shipping on both orders. Shouldn't advertise that if you can't honor it
Use amsoil in many vehicles, never any issues. Have not used the 20-50 in primary and trans yet but I will
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Only Oil I would use
By 
TimU, 
a 
Verified Buyer 
from 
Clinton Township, MI 
on 
November 02, 2022
Over the years of owning my 2007 HD Ultra Classic, and after 70K miles, this is the only oil I have used.
My bike came from the factory with HD oil, but at the first oil change, (500 miles), and every oil change thereafter I have used Amsoil.
NEVER had an oiling problem. The current cylinder leak-down result is 6%. You can't complain about that after 70K miles.
Here in Oklahoma the summer heat can get pretty intense, like 105-109 degrees f. intense. My Thunderstroke 111 runs great with Amsoil in it and it quietens down the valve train too. I highly recommend Amzoil products for your motorcycle,I've been using Amsoil for over 25 years.
You get what you pay for and this is good oil.my Opinion best on the market .
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Best
By 
STEPHEN, 
a 
Verified Buyer 
on 
October 09, 2022
All I use
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
3 star rating
Why Amsoil? Redline, Royal Purple.
By 
GUY, 
a 
Verified Buyer 
on 
October 08, 2022
I wrote a review 3 weeks ago, asking why you offer different things if a purchase is over a certain amount, and you never send it. I've been buying Amsoil for 20 years and never received a single thing. what kind of a business does that?
Was this review helpful?
5 star rating
Oil
By 
ALBERT, 
a 
Verified Buyer 
on 
September 18, 2022
This is a carousel of Shop by Equipment slides. Use Tab to navigate through the carousel or the Next and Previous buttons. Use Enter to select a slide.
Thank you for visiting www.amsoil.com. Certain parts of this website may not function with Internet Explorer. To continue shopping with us, please update your browser using one of the options below.