All i run in my hemi 5.7 several engines never a problem and I'm rough on trucks

Before the current vehicle I had an Alfa. It received one free oil change. I did it to make sure there were no warranty complications. I always do the first change on a new vehicle way early. So on the Alfa I used Amsoil. On the factory change they put in their Mopar stuff. The car used a quart in approx 3-4K miles. I switched back to Amsoil, the car would use less than 0.5 qt oil in 6K miles. I think the Chevy Tahoe will be the same. There was no free oil change with the Tahoe so I did the first change at 2K using Amsoil Signature 0-20. I could feel the Tahoe ran better after the change. A very long story just to say, it's just better oil.

Amazing product, fast reliable shipping with no hassles! Definitely would recommend AMSOIL to EVERYONE!

Always pleased with using amsoil. Keeps my engine running smooth and clean. Oil is never black when due.

Have been using amsoil since the 80's quiets down gm lifters and is the best engine oil

I have 2013 Ford Flex SEL and a 2011Ford Flex Limited EconoboostTurbo. This oil is superior to any oil I've ever used. The capillary effect allows it to flow into places other oils do not go unless forced. I had a slight grinding noise on start up on the turbo flex. After switching to Amsoil I stopped hearing it. My other Flex with 250k miles is quiet as a mouse after switching to amsoil. Friend was losing a quart every 300 miles switched over to amsoil no more top offs just regular oil changes again. Just ordered 2 cases of trans fluid to do both flex. If you care about your vehicles use amsoil. There is a noticeable difference. I can go another 100k using this oil.. Thanks amsoil.

I use this 0w40 in my 2015 Dodge Challenger SRT392. Been using Amsoil since 1999 and trust it 100%. I’ve even been featured in the Amsoil News letter and calendar many years ago because I believe so strongly in Amsoil and how it keeps my vehicles running smooth and reliable. As for the 0w40! Wouldn’t use anything but Amsoil 0w40 in my Challenger.

Love Amsoil, wouldn’t use anything else. Been running this 0w30 in my Ram pickup and my jeep. The truck is a day in day out driver so it gets the most mileage. The jeep is a weekend trip vehicle. With Amsoil I just don’t worry if I’ve solicited the right oil to keep the engines running smooth and protected from any oil breakdown, because it just doesn’t happen with Amsoil. Amsoil user since 1999

Very satisfied

Excellent product, engine runs like new after always running AMSOIL. Highly recommend their oil!

Amsoil is the very best product you can get for your vehicle, engines and toys needing protection. The signature series is their very best and they have proven its far superior to any other product n the market, nothing comes close. Highly recommend this to anyone needing an oil product for their engines.

Been using this oil and will continue to do so. Put 8,000+ miles on this oil before changing and still looked good. Will buy again.

I have used Amsoil for many years. This 4.7 liter Toyota is approaching 300,000 miles. It does not leak, it uses about a pint per year, and starts easily even in below zero temperatures. Toyota and AMSoil are an excellent combination.

This is Awesome I used this for the first time on my Ford F-250 and man do I love this Product truck runs so much better I Highly recommend this if you have a Diesel Love it

I’ve used Amsoil for 30 years and it has worked great.

So nice having all my oil and filters for all my machines in one place and know it’s top notch!

I definitely noticed an increase in rev speed in my 08 Suzuki SX4 2.0L.

This oil has been supplying my street car for a while and has not caused any buildup in engine and the flow/pressure is always on the money. I also started using amsoil in my truck and it’s never run better

This oil has performed great in my car! I have a 1995 Suzuki Jimny with the K6A engine and the signature series runs smooth! I use the 5w30 in the winter and 10w30 in the summer and the performance is superior!

I use Amsoil in my cars, truck, and motorcycle, tractor, and small engine equipment. I also use the gear oil and may other Amsoil product for the last 30 years.