Ever since switching all my vehicles to AMSOIL I have noticed a difference in performance.

I have been using AMSOIL for over 10 years and have seen better improvement on the condition of the motor and mileage increased a little. Now have over 212500 miles on my Dodge Hemi 5.7 and the only work that has been done to motor is normal maintenance.

I love it that they have the whole package available! I didn't have find oil, then go find my filter. Perfect!

I use Amsoil in my motorcycles and in my trucks I love it would not use anything else. That’s why I have an account and have it sent to my home every six months or so.

Easier starting, less time in open throttle after start up, quieter idle for 1 GR FE. Motor just runs smoother overall. Still questioning +2mpg increase but it's true on paper receipts. Stronger uphill power. Less transmission hunting/shifting up-down on long uphill hauls. At this point, it will be Amsoil High Mileage Motor Oil until there's no more Amsoil or no more IC motors in the garage.

First off Amsoil is top of the line oil! Many people say, “Oil is oil all of it is the same.” I’m sorry to say it’s not, Amsoil’s additives are far superior when it comes to wear on engines. Don’t believe a review? Research it there are videos that show testing. I use Amsoil for all my vehicles. Great service, product, and fast shipping!

After the oil change, immediately after starting I could tell that this is good oil. I normally use the signature series but wanted to try the AMSOIL 5W-30 100% Synthetic High-Mileage Motor Oil just to see what it was like or how my '04 Buick lLeSabre would take. The drive was great, felt it was worth it. This is what I plan on using from now on.

This oil goes in my 2007 Jeep liberty with 280,000 miles on the odometer. I have ran amsoil in this liberty since day one and I have NEVER had an engine issue. Runs as smooth as the day I got it.

I have confidence in Amsoil, however I have complaints: (1) The cost is almost unbearable (2) I really need the option of a 5 QT container.

I had ordered the wrong oil. The return process was so easy and the rep was very professional in the explanation of returning the oil!

Been using Valvoline, but noticed the engine was just as dirty as the oil was When I replaced it with the Amsoil engine ran better and parts are cleaner

I gained 1 mpg and protecting my engine, it's awesome

I've been running amsoil for many years now and this is the main oil that I'll run in all my vehicles, especially anything that's modified. It's wear protection is unmatched and if you order enough oil, it is definitely worth the money. Especially if you are a member. Highly recommend it!

My 09 Accord has 320000km and was using oil and blowing blue smoke occasionally. That has stopped since using the high mileage oil.

Definitely a good oil to use on higher mileage engines.

I’ve been using Amsoil for the past 8 years in all my vehicles and get better gas mileage and less engine wear. I highly recommend this oil on conventional vehicles and on high mileage engines. This product holds up even beyond the recommended change time.

I've been using AMSOIL products for more than 30 years to protect my vehicles engines and drivetrains, it's quality is unsurpassed.

Great oil

I use this in my daily driver 2017 dodge challenger with 120000 miles.I also use it in my daughters 2011dodge charger that has been noted to have valve lifter issues.The charger has the 5.7 liter engine with 223000 miles on it and no engine issues. Very impressed with Amsoil.

I have about 1000 miles on since my change to this oil , so far I love it I have gained 1 mpg total with normal driving!