AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil
ALMQT (ALMQT-CA)
Quart Bottle
Case of 12
AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil
ALM1G (ALM1G-EA)
Gallon Jug
Each
AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil
ALM1G (ALM1G-CA)
Gallon Jug
Case of 4
AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil
ALM55 (ALM55-EA)
55 Gallon Drum
Each
AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil
AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil
5 star rating
Based on 6,861 reviews
5 star rating
Oil
By 
CHRISTIAN, 
a 
Verified Buyer 
from 
South Lake Tahoe  
on 
October 02, 2025
Great product helped with my Toyota Highlander death rattle at ignition. Would definitely purchase again for my next oil change. Also used the Amsoil filter
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
AMSOIL signature
By 
ROBERT, 
a 
Verified Buyer 
from 
Alberta  
on 
October 02, 2025
Use in my 3 vehicles for the best protection have a lot of faith in this product
Been running the soil and eco-boost engines since 2016. 2.0, 2.7 & 3.5 L in five different vehicles between my son and I. Also, in a Lexus LS series.
Total mileage well over 200 K.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
100% Synthetic
By 
RICO, 
a 
Verified Buyer 
on 
October 02, 2025
Drained old oil and changed the filter without any problem. I hope the oil lives up as advertised
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Best oil
By 
BRIAN, 
a 
Verified Buyer 
from 
Fort Wayne, IN 
on 
October 01, 2025
Best stuff on the market. I have a 2019 4Runner, which can be a noisy engine. After using signature series, my engine is quieter with better mpg. Make sure to change your other fluids as well. Less friction equals better mpg
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Quality
By 
MARCO, 
a 
Verified Buyer 
on 
September 30, 2025
I trust AMZOIL above all others in providing a top quality product!!!
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Synthetic oil
By 
KEITH, 
a 
Verified Buyer 
on 
September 29, 2025
Excellent oil surpasses my expectations
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Motor oil
By 
Fews, 
a 
Verified Buyer 
on 
September 29, 2025
Awesome!! Product is great saving on gas mileage already thanks..👍🏾
I just put Amsoil Signature Series in my 2019 Ford F150 5.0 KR for the first time and seems to be running smoother and I believe my MPG is a little better. I have the gear oil being shipped now for my differential.
I started using Amsoil back in the 70's (I believe I was back then). First I bought compressor oil and the compressor is still used today every day!
Every carn truck, boat, compressor, motorcycles and garden machines use Amsoil! I have even proved to my friends just how great a oil it is. I sold one of my work trucks a while back that had over 386,000 miles on it, never leaked a drop and never use a drop and the oil pressure was still great. If you do regular maintenance then your equipment will last forever!
Even today I just bought 2 new used year old Kia"s, one for the wife and the same one for myself and the first thing I did was to replace the oil with Amsoil 0W-20 in both of them.
You can give me any other brand of oil for free and I will give it to anyone who wants it.
I've been a confirmed customer for years and I will never use any other oil... I love my machines too much....
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
The best!
By 
GARY M, 
a 
Verified Buyer 
from 
Flowery Branch,Ga 
on 
September 29, 2025
Amsoil products far exceeds the competition. I switched from 0-20 to 5-30 for a little more protection. Engine runs quieter and smoother.
Little more than Mobile 1 but you get what you pay for.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
It’s worth it
By 
JACOB, 
a 
Verified Buyer 
from 
Van Wa 
on 
September 28, 2025
LONG time Royal Purple user. Was getting low OP in my off road vehicle for some reason. Decided to test out the hype of AMSOIL, that was 5 years ago, and I have not gone back!!! Oil pressure is where it needs to be, engine runs smoother, and engine actually stays cooler!
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
2015 Ford mustang gt Roush supercharger
By 
DIEGO, 
a 
Verified Buyer 
from 
California  
on 
September 28, 2025
oil change is due and wanted to use a different type, I used to use 5w-40 castrol European. However, I was looking into 5w-50 from Castrol super car gt or amsoil. Did a lot of research and came to the conclusion that amsoil is the best and safest oil to use for superchargers applications. Only if you’re going to keep your car forever and track use. Once I change the oil car runs and shifts so smooth however you will still hear the clicking from the engine lol. Other than that 10 out of 10, thank you amsoil! I’m going to stick with amsoil forever and use it for my other cars and trucks!
By 
Paycut, 
a 
Verified Buyer 
from 
South Carolina 
on 
September 26, 2025
AMSOIL came highly recommended so I wanted to start right off on our new Tundra. Ordering was easy, quick delivery. Fair price. Will continue ordering online and using
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Best Oil for 2.0 Jeep Motor
By 
HERBERT, 
a 
Verified Buyer 
from 
Lake Charles 
on 
September 26, 2025
This oil was recommended to me by some fellow Jeep Wrangler 2.0 Turbo owners. These 2.0 Turbo engines have a slight rattling/knocking noise somewhat like a diesel engine sound with normal oil. These Amsoil Oil quiets the engine and now it sounds like a normal gas engine. Jeep started using the 2.0 back in 2018. Some of the friends of mine have over 100K miles without any problems using the Amsoil. I’m sold.
The Jeep 3.6 valve train noise is totally gone! I have tried many different brands of oil, but the valve train noise always comes back in a day or two after oil change, AMSOIL is definitely far far more effective.. Cam and lobes along with rocker arms all look new..
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