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 7,004 reviews
5 star rating
0 W 20
By 
LESTER, 
a 
Verified Buyer 
from 
Havelock , N C 
on 
August 01, 2026
I haven't changed my oil yet , I am waiting to get the 5 W 30 instead of the 0 W 30 because my truck will sits 2 or 3 days and not be started so I want the heavy r viscosity for better protection .
Awesome oil. I don’t go the full 25k miles but I did extend the change intervals to every 8k miles. For my car to be a 2004 with 230k miles the engine still runs quiet and smooth using this oil.
I would say best oil I’ve bought in a long time would recommend to everyone
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Signature Series
By 
SCOTT, 
a 
Verified Buyer 
on 
July 28, 2026
If any of my gasoline vehicles require synthetic oil 5w-30 signature series is what it gets no matter what the manufacturer says. It’s never let me down and it won’t! Great oil!!
By 
VICTOR, 
a 
Verified Buyer 
from 
Las Cruces Nm 
on 
July 27, 2026
⭐⭐⭐⭐⭐ Excellent products! The AMSOIL engine oil keeps my engine running smooth and quiet, and the oil filter is high quality and provides great protection. I’ve had a great experience with both and highly recommend them.
Ordered and picked up the same day - could have had it delivered but i was in a hurry. I use it in all my
cars and trucks for the last 15 years and I never have to worry about my engines.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
civic si
By 
ADRIAN, 
a 
Verified Buyer 
on 
July 26, 2026
Just the right amount of oil I need for the vehicle
I run 5w30 signature series in my 2021 F-150 3.5 Eco Boost engine. This engine has twin turbos and they run extremely hot. I feel Amsoil gives the protection needed to reduce engine and turbo wear.
Phil
I have been using Amsoil in my Subarus for over a 15 yrs. I usually run 18-20k filter every 5k before changing. I have never had any issues ever. Best there is
By 
GALE, 
a 
Verified Buyer 
from 
Grand Junction, Colorado  
on 
July 24, 2026
I have a high flow oil pump installed in my motor, oil pressure runs mid 50 psi and consumption hasn't been a problem yet. I believe amsoil is the result of the steabyness i was looking for.
Love the oil not so much the filter.I really wish you guys would get the amsoil ea17 filter back in stock, its been far to long they've been on back order.
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