AMSOIL - 5 Star Synthetics

"Update: Still using and loving the products! Just got my oil results back from Blackstone labs for AMSOIL Signature Select I ran in my first flex for 20K miles. Results were good and the recommendation was to keep the same oil change interval. I live in the PNW where there are lots of mountains and hills. Great products and excellent customer service! I use Amsoil for all of my vehicle fluids (oil, transmission, transfer case, differential.) for both diesel and gas engines. I have been using the products for years with no failures due to lubrication or temperature. I also have my oil tested by Blackstone labs with great results!"

"Amsoil is the best oil I have used. I work with heavy equipment and drive a diesel truck. The product is amazing. My truck has 450,000 miles on it and still runs as strong as the day I bought it. I bought it with 35,000 miles. I have used amsoil since I bought the truck and have swapped over everything I drive to amsoil."

"I have been using Amsoil for 20 years and the product just keeps getting better and I use it in everything I own. Sign up with Joann and you won't be sorry you did. Save money on all your Amsoil."

"I have done extensive research over the years on which oil is the best on engine performance and longevity. Amsoil is superior in every category of comparison. You get what you pay for. There's no other oil I would trust to do extended oil change intervals on a dirty diesel. Just make sure you use the Amsoil filter also. Check out YouTube videos of people doing real world tests against other top performing oils such as Mobile1 or Royal Purple (which I used to use). Also, I highly recommend ordering from 5 Star Synthetics. Joann has been my dealer for years and she is great! She doesn't push the products on you, they speak for themselves. God Bless!"

"Didnt know i had an AMSOIL so near to me so i ordered some of their synchrotech transmission fluid because my car the rsx type s has 2nd gear grinds and 3rd gear popouts and i hear amsoil helps with that. Put it in my car and havent had any issues! Also i ordered some and fedex delivered it to the wrong house and called them to try to order more or pick it up cuz i needed it ASAP. They gave me my order of 2 bottles for free no questions asked and gave me a free membership to their membership. My membership was going to expire and they renewed it for me no charge! Customer service is 5/5 and AMSOIL is some of the best oil you can get for you vehicle. Just simply an amazing product tied with their customer service there is no wrong going with amsoil i promise you that."