The original synthetic is still the best. My 2011 Focus has 3000,000 miles. Does not use any none zilch zip nadda oil. I will never use any other brand at sny price.
Amsoil has protected me for years now all my engines never had an issue. All the research I’ve done leads to amsoil being the superior product among the oil masses
After viewing numerous reviews comparing motor oils on YouTube. I came to the conclusion that 0W-40 Amsoil Signature was, without a doubt, the best. When you are protecting a twin turbo engine, nothing else is better than Amsoil 0W-40.
Nothing.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Good oil
By 
VINCENT, 
a 
Verified Buyer 
on 
February 11, 2026
By 
JASON, 
a 
Verified Buyer 
on 
February 10, 2026
This can be further from the truth. I have an 07 Jeep SRT 8. The previous owner was using another top oil brand. And after my truck would get to optimal running temperature. My oil pressure at idle would drop to 9-10 psi. I changed the oil after 3k miles and heard great reviews on AMSOIL. I used Amsoil Signature series oil. And my oil pressure at running temperature is appro 24-26psi. I will definitely spend the little bit more money. Knowing AMSOIL is absolutely Superior. Customer for life.
I’ve been running AMSOIL in my 2020 Jeep Gladiator Mojave and I’m seriously impressed. The engine runs noticeably smoother and quieter, even after long drives and hard use. I do a mix of highway, city, and off-road driving, and AMSOIL has held up perfectly in all conditions. Throttle response feels sharper, and I’ve had zero issues with performance or oil consumption. It gives me real peace of mind knowing my Gladiator is protected, especially in extreme heat and rugged terrain. Definitely worth the investment—I’ll be sticking with AMSOIL from here on out.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Best oil on the Market
By 
SHAWN, 
a 
Verified Buyer 
on 
February 09, 2026
I’ve used this oil for over a decade. It’s kept 2003 Toyota running at peak performance.
At the recommendation of my mechanic I recently switched from 5w-20 to 5w-30 in my 2012 Honda Accord. The first thing I noticed was the engine sounded much quieter both at idle and while driving.
I had recently noticed that the 5w-20 was being consumed at around one quart per 3500 miles. While not high consumption, I’m hoping to slow it down.
Expect to push this car passed 400k miles.
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.