Got turned on to Amsoil a few years ago and will have to say it is the best thing that has happened to my 05 F150 5.4 3 valve, the notorious engine loaded with issues. Since using it, oil consumption-gone, engine noise-almost non-existent.
I have been using Amsoil in my Dodge 2500 5.9L for a long time and it is the only oil I trust. All of the Amsoil products provide the best performance and protection. They are the only ones I use.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Best oil you can buy.
By 
JOHN, 
a 
Verified Buyer 
from 
Long Island NY 
on 
November 28, 2022
Anything Ams is too quality top notch beats everyone else. If you don't believe me get an couple old pans and an OUTDOOR camp stove. Put AMS against anything else and I garantee it will shock you. Be careful. I simply won't put anything else in my vehicles or toys.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Signature Series provides a noticeable difference
By 
AUSTIN, 
a 
Verified Buyer 
on 
November 27, 2022
I have used other brands’ cheaper full synthetic engine oils in the past, but after switching to Signature Series oil in my ‘97 12v, I have noticed quieter and smoother engine operation from the oil change alone. My truck is going on 400k miles, and it’s safe to say it will the Signature Series treatment going forward.
I broke my 2003 duramax in and switched to Amsoil 15-40 and now have over 800,000kms on it with out ever removing the valve covers and it is still running strong
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Signature series max duty
By 
SHANE, 
a 
Verified Buyer 
on 
November 22, 2022
I have a lifted 2014 ram 2500. since I start using amsoil it runs smoother and quieter for longer. I 100% recommend them
Ordering from AMSOIL is always super fast shipping and the best quality of oil out there. I run it in all my Vehicles which is including my 18 turbo RZR and my built Harley.
This is the best oil out there! I won’t use anything but amsoil product in my truck and car
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Good quality oil
By 
DOUGLAS, 
a 
Verified Buyer 
from 
North Texas 
on 
November 01, 2022
I like Amsoil's quality and their constant testing.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Great oil
By 
PAUL, 
a 
Verified Buyer 
on 
October 31, 2022
We go 8000 mi. Between oil change now
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Great oil, and it was in stock
By 
CHRIS, 
a 
Verified Buyer 
on 
October 27, 2022
Like the title says great oil, and it was in stock when I ordered it, and arrived with in a week of ordering. Planned on changing to Amsoil, and when the stores supply of the other brand I had used I changed.
I have your products in racing with great success. The diesel oil is for my wife’s truck which she makes trips to Tennessee, Missouri,Kentucky,& Texas pulling a43 ft horse trailer I like make sure things are protected the best way possible I believe Amsoil does that.
Best oil on the market! You can actually feel the difference when you put some between your finger tips. I trust this oil in my '96 Powerstroke for a year at a time. (I don't put a lot of miles on it in a year).
1990 Jeep YJ 4.2
I run 5w-40 (winter) 5w-50 (summer) NJ
I was a Rotella user for years. This engine needs dino oil because of its high zinc content. Amsoil Diesel oil is just plain better imo. Cold starts are quieter. This motor has been bored & stroked to 4.7ci with a mild comp cam. I have higher oil pressure at idle and at speed than Rotella. 10 more psi at 55mph. and around 5-7 psi increase over Rotella at idle. Gas mileage has improved as well. The motor just seems to run smother. I was hesitant to switch but I'm glad I did. Sorry Rotella. But the improvement from Amsoil is obvious. Thank you Amsoil.
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