AMSOIL Signature Series 5W-50 100% Synthetic Motor Oil
AMRQT (AMRQT-CA)
Quart Bottle
Case of 12
AMSOIL Signature Series 5W-50 100% Synthetic Motor Oil
AMR55 (AMR55-EA)
55 Gallon Drum
Each
AMSOIL Signature Series 5W-50 100% Synthetic Motor Oil
AMSOIL Signature Series 5W-50 100% Synthetic Motor Oil
5 star rating
Based on 7,209 reviews
5 star rating
Engine oil on my trucks
By
Javier,
a
Verified Buyer
from
Texas
on
September 25, 2026
I only use this oil none else
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
It works
By
ROBERT,
a
Verified Buyer
on
September 25, 2026
Math works
Preferred customer works
Oil works
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
A must for GM 6.2
By
MARK,
a
Verified Buyer
from
Colorado
on
September 24, 2026
My 2023 Sierra 6.2 used to knock on start up and now its super smooth. I also get better MPG vs the old full synthetic I used to run. A++
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Good
By
KEKA,
a
Verified Buyer
from
WA
on
September 24, 2026
Good oil
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
El mejor aceite que he usado
By
JONATAK,
a
Verified Buyer
on
September 23, 2026
Recomendado 100%
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
best oil
By
CHARLES,
a
Verified Buyer
from
FL
on
September 23, 2026
been using g for years now. my wife even said what did you do to my car? it's running diff
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Amsoil5W-30
By
FRANCIS,
a
Verified Buyer
from
windsor NY
on
September 22, 2026
great oil i use in all my vehicles
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Amsoil Superior lubricating
By
DAVID,
a
Verified Buyer
from
Florida
on
September 21, 2026
I’ve used Amsoil for many years in my cars, my lawn equipment, Motorcycles with superb results, never any issues. The only thing that I wish they would do was give me free shipping for as much money as I pay for the product.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Best in the Business
By
SETH,
a
Verified Buyer
on
September 21, 2026
I use amsoil products in everything I can. Superior in every way that I’ve seen. If I purchase a vehicle the first thing I do is replace every oil it has with amsoil and it has been phenomenal. I recommend it to anyone that will listen and haven’t heard a single person regret going with Amsoil.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Perfect
By
JON,
a
Verified Buyer
on
September 21, 2026
Love this stuff.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Keeps my 2009 Lexus running like new 👍🏼
By
ALFREDO,
a
Verified Buyer
on
September 20, 2026
Keeps my 2009 Lexus running like new
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Ram 2500 Hemi
By
LARRY,
a
Verified Buyer
from
CA
on
September 20, 2026
Approximately 1,200 miles driven since I switched to the AMSOIL Signature 0W 40 Oil. I notice a smoother start up. A smoother running engine. A substantial increase in performance. I will definitely start running AMSOIL products in my other vehicles.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Great Oul for GDI Engine
By
CRAIG,
a
Verified Buyer
from
Louisville
on
September 19, 2026
Great oil. All I use on my Kia Telluride.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Used in my new land cruiser
By
JAMES,
a
Verified Buyer
on
September 19, 2026
Runs cool
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Great product
By
ELLIOTT,
a
Verified Buyer
from
SC
on
September 19, 2026
Top Tier product
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Superior Engine Oil
By
PETE,
a
Verified Buyer
from
Boston, MA
on
September 19, 2026
I am very happy with Amsoil products. Quieter morning start. Overall super happy with my engine performance.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
👍🏼
By
BILL,
a
Verified Buyer
on
September 19, 2026
👍🏼
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Safe Bet
By
TERENCE,
a
Verified Buyer
from
Amherst NY
on
September 18, 2026
With all the issues going on right now with motor oil due to war in the Middle East .This Oil only gets better. While other Big Oil companies lie and deceive about the problems they are having and formula changes , This is the only oil I trust
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
The best
By
REINALDO,
a
Verified Buyer
on
September 18, 2026
I would not use any other oil. I've been using Amsoil for nearly 20 yrs.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
No problem so far with my trucks, one is over 300,000 miles.
By
None,
a
Verified Buyer
from
Rock Point, Az
on
September 18, 2026
Oil is great, does the job. Just change the oil after 4.5k. No worries.
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