AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil
ASLQT (ASLQT-CA)
Quart Bottle
Case of 12
AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil
ASL1G (ASL1G-EA)
Gallon Jug
Each
AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil
ASL1G (ASL1G-CA)
Gallon Jug
Case of 4
AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil
ASL55 (ASL55-EA)
55 Gallon Drum
Each
AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil
ASL27 (ASL27-EA)
275 Gallon Tote
Each
AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil
AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil
5 star rating
Based on 6,861 reviews
5 star rating
AMS Oil Great PR and Customer Services
By 
Big E, 
a 
Verified Buyer 
from 
Laplace, La 
on 
September 09, 2025
I took the recommendation of the Shop that built my engine D&A Transmission to use AMS Oil happy with the product and most of all the great experience with ordering the product thanks for being customer friendly.
I work in the oilfield and, if you know you know. Amsoil gives me the confidence to run these lease roads in the worst conditions. I never worry about my oil letting me down! Now my suspension, that's a different story! 🤪
I've been using Amsoil oil and filters for years on both gas and diesel engines and they've been great. Never had a problem with shipping and I'll continue to use the best out there!
My Chevy Traverse runs smoother and quieter. It takes off like a rocket since I put AJ’s formula in the engine. As compared to the bulk oil that the car came with, the Amsoil is far superior.
I’ve ran this oil for 100,000 miles. Car has 140k now. Lexus - 3.5. 5k oil change interval. Oil analysis has been well below normal wear averages since the first 5k, which was done at 45k. “Basically half” Although I can’t say whether the extra money is worth it for Amsoil, I cannot argue about the results. Amsoil filter, all other fluids I stick to stock Toyota OEM. The wear results make me want to switch all my vehicles. But…. “I have also cleared 300k on numerous Toyotas/subarus/ 1 ford/ with other brand oil”. The main difference is the analysis results tho. Just change your oil sooner than later. Great product, great delivery, always available, results.
I highly recommend Amsoil signature series to anyone who wants to run the best of the best in their car! My 2019 supercharged Mustang GT consumed Mobil 1 oil like it was water, amsoil is little to no loss. Car feels much better and is much more quiet as far as all of the coyote ticks. Highly recommend!
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Top quality engine oil, long-lasting, outstanding protection
Amsoil is top-rated, top-tested, among the best products consistently. I get peace of mind with Amsoil protecting my engines. I know the quality I am getting with Amsoil and that's why I use it in all my vehicles and machinery. The extra protection, the stability, that's top quality
I am a retired auto mechanic of 50 years this oil filter is the best on the market. I only trust Amsoil products for my vehicles.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
2021 Ford EXPLORER ST + 5 other cars.
By 
CAPTAIN BILLY, 
a 
Verified Buyer 
from 
Washington, United States 
on 
September 02, 2025
Bought myself an Explorer ST about 2 years ago. Everything that I have read, they say to check all the factory fluids because some are sent out low. Needless to say, mine was in that group. So, ALL fluids have been changed, 2 diff's, transfer case, trans and the engine every 3k, I do lots of city driving so I change it at 3k.
Anyway, I use Amsoil in all 6 of my vehicles, and all vehicles are happy.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
New 2025 Tacoma TRD-Pro
By 
JAMISON, 
a 
Verified Buyer 
from 
Chester Il  
on 
September 02, 2025
I bought a new truck and for the first time in my life I was lucky enough to be able to buy a “top trim” fully loaded model. I plan on keeping this truck so I figured it deserved a top trim 100% synthetic oil.
Been using this for 25yrs. Never replaced a valve stem seal, any seals, just does exactly what ATSM tests shows and Amsoil claims. The only PAO based oil for the general public and easy to get.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Switching brands
By 
WILLIAM, 
a 
Verified Buyer 
from 
St. Joseph 
on 
September 01, 2025
I am switching my can am spyder and the dodge 5.7 to the 5-50 signature series oil. It is rated about the oils I am currently using. It is also slightly cheaper when purchased by the case.
I have been running Amsoil products for over thirty years and they have never let me down! This oil holds up through all extremes and after 6k miles on it almost drains looking clean. You cannot go wrong with these products. It only cost a little more to go first class!
About a month ago I got my pickup back from Hennessey Performance. They lifted it 6" and installed a Whipple supercharger on it. The recommended oil to be used is 5W-50. I have heard Amsoil is the best oil out there, and Hennessey recommended it as well. I have decided to use Amsoil in my Ford pickup and also my Audi car as well. I change the oil every 3000 miles or so and will expect the oil to work it's magic throughout the life of the cars. I will let you know how it works out.
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