Customer Ratings & Reviews

I have been running an amsoil product in my 08 Toyota Tundra since new. When i say new i mean when the engine had enough km's that it was past the break in point I switched. I ran Amsoil XL for several years at the recommendation of the place i get my oil changes at. Changed it out every 6 months. I am pretty sure Signature Series was never recommend as they would only get my business once per year. Not knowing exactly what Amsoil had to offer I did some further research and discovered this Signature Series oil. I now change my own oil as I am able to order directly from Amsoil. I have been running Signature Series for about 5 yrs now with basically a once a yr oil change. I mainly drive secondary rds but come fall hunting seasons i am all over the backwoods. Here where i live it can get down to -30 at times during the winter. The flow rate is excellent in extreme cold as well as I always watch oil pressure gauge and no matter how cold it seems the needle always jumps up quickly on cold start up. My truck now has 271,000 KM's on it. Even with once a yr oil changes the oil doesn't look alot darker than it did when i changed it the previous year. Great product I can't imagine running a different oil in. I now have my son's truck running on Signature Series as well. I plan on putting 1 million Km's on my truck!

This was recommended for my vehicle and I have used other amsoil products in other vehicles and have blessed using it. Tks

Oil is the best

Have used Amsoil on my 2018 WB Hellcat since 1st. oil change with Extremely satisfying results. So happy use it in my Jeep Wrangler as well. Nothing but the best for my vehicles.

2017 Tacoma TRD Off Road struggles to get 18mpg. Used Signature Series Synthetic and now getting 20-21mpg.

Save time, money and engine wear. Have used Amsoil in all my vehicles and equipment for over 25 years and and have not experienced an engine failure.

Been using Amsoil in my Dodge Dakota since I purchased it 13 years ago. Today it has 250,000 miles on it and still runs great.

I'm not sure how you review oil. When I opened container, the oil, was oily. So I put it in my engine. My engine has not blown up, so I assume it's the right oil. I'll keep buying their oil, until it no longer feels oily to the touch straight out of the bottle.

Feels and runs smoothly !

Excellent protection

I use Amsoil in everything from my truck to my motorcycle, lawn mowers, generators and anything that takes oil. I also use the oil filters, gear oil, and everything that Amsoil makes.

AMSOULS NEED RETAIL OUTLETS TO ADVERTISING.

I highly recommend this product. I only use amsoil products in everything from my compressor to my vehicles. They have done there homework to produce great products.

Oil pressure is improved with this product

Trusted product! This particular oil was made for my engine what can you ask more? They took the time and knowledge to make the oil possible for my car... its really a no brainer! Nice to have a compagnie that's back you up!

While I can't say the car runs better with this vs another top synthetic, I have hundreds of thousands of miles on my vehicles with this oil only changing once a year. Great stuff!

I have been using AMS Oil for 18 years and wouldn't use anything else. It is by far the best and all of my vehicles with several hundred thousand miles on them combined is the proof.

I doubled my miles between oil changes which saved me money, I use it in my small truck also.

So I run Amsoil signature series in all my vehicles. I run 5w-20 in the 2015 Jeep Rubicon Hard Rock and when I changed the oil at 7000 miles of use the oil lab came back and said to change at 9000 next time and see how it's doing. The wife's 2011 Subaru Impresa 5w-30 oil was changed at around 7000 miles as well and the results were the same! I think once the oil is tested at 9000 they will most likely advise I go even longer. They measured for contaminants as well as assessing the TBN which both came back outstanding, and both engines have zero issues. Black Labs is where I send my oil. The higher price for Amsoil is worth it in my opinion especially when I can go so long in between changes. It pays for itself.

I have numerous vehicles with 60-400,000 miles on them that have been running Amsoil most of their lives. All still have original engines. What more can I say?