I switched from the 0w-20 on a Jeep 3.6 and Subaru 2.4l turbo last fall, both motors sound quieter on start-up and when the oil is at max temp. I have seen no reduced MPG after making the change. On the Subaru turbo motor, the oil temps under higher boost/loads are 3-4C cooler and on the 3.6l it has a couple more PSI of oil pressure during low speed high load off road conditions.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
The best
By 
GD, 
a 
Verified Buyer 
on 
June 02, 2026
I've been using Amsoil since 2001. It's the best oil!
My daily was being used with other synthetic oil brands and was always giving us a sowing sound but that was with 5w20 and now we are border line close to 200k miles and after switching to 5W30 we noticed a big difference especially in the mornings!
I was using 5W20 from what my manufacturer recommends but was told it would be better to run 5w-50 for my 15 Mustang 5.0 and it makes sense since I drive my car like I stole it !💯😎😈 lol but was definitely worth the investment since I do track it several times a year and holds up pretty damn well in the heat and during high revving
Been running AMS oil since the day the truck was borne. Lets see how well it does I have 90k on the truck now without a tic. I've never had a machine that runs AMS it's whole life fail mechanically.
When Toyota posted a bulletin about using different oil in hotter climates and conditions. I immediately went from 0-20 to 5-30 signature series oil right after that was posted. New Tacoma 4-Cylinder Turbo engine runs quieter. Next thing I do is change the rear differential and front differential with severe gear series fluid. Great products I use their gun cleaner and gun oils too. Awesome stuff
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Best Oil on the market
By 
SCOTT, 
a 
Verified Buyer 
on 
May 30, 2026
I have used this for over 20 years and love it.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
K5 still alive?
By 
TRAVIS, 
a 
Verified Buyer 
from 
Pittsburgh pa  
on 
May 29, 2026
Brand new Kia K5 GT nothing but the best for her, with the help of amsoil this car will be arounf forever gonna break the kia stigma, lol thanks for the best oil ever amsoil ily 😘
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Great product
By 
CORAL, 
a 
Verified Buyer 
on 
May 29, 2026
I use amsoil in all of my vehicles. I feel that is why I obtain high mileage with little or no major maintenance problems. My 2003 Chevy truck now has 347,000 miles with no engine teardowns. It still runs like a top. My 2023 Envision with only 47,500miles I had oil change recently. I expect high milage on it also. It's not just synthetic, it has to be amsoil synthetic.
Fantastic! I switch over to AMSOIL Signature Series 5W-30 at 30K service, my trucks seems to be running smoother, I intend to stretch out my oil change to 7,500-10,000 mile instead of 5,000.
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5 star rating
I think this is the best oil on the market. The only one I w
By 
JOHN, 
a 
Verified Buyer 
on 
May 28, 2026
I think this is the best oil on the market. It’s the only one I will ever use in my Dodge 6.4 hemi
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