Customer Ratings & Reviews

I added Amsoil 5w30 Signature to my 08 350Z HR. I noticed an increase in power immediately. I'm running against cars with much more power, and outperforming them, thanks to what feels like quicker acceleration through the rpm range. I recommend this product for all engines, as no other oil comes close.

Use in my Tundra, lasts longer, cost effective and better quality than whatever the dealership puts in.

Last time we had to order amsoil we received free shipping. That just added to the great deal we already get from them. We've been using amsoil products in or vehicles for 2 years now and nothing else compares.

I put Amsoil in ALL of my toys.

only oil I use in my cars and motorcycles.........

I use this oil on all my small engines. My compressor used to trip the circuit breaker regularly until I switched to this synthetic blend. Hasn't tripped a breaker since even in the winter

I use this my children use it in my friends use this. We enjoy the fuel savings less engine friction and longer service intervals it really saves a lot of money.

used products from1997 to today

I have been using this oil for 10 years on my 2006 Corolla, change the oil once a year, now have 168000 miles and still going strong

Talking to a woman about oil is not easy, but a co worker and former mechanic was the one that got me started. I am glad he did. I have been using Amsoil oil for about 6 years and will not use anything else. I first bought it because i drive a lot of miles to work but now i work from home mostly and still use it. Amsoil has quality products!

Love the extended oil change intervals, with no harm to the vehicles

I have read on a number of websites and have heard over the years that Amsoil is the gold standard for motor oil. I finally registered for an account and am now using Amsoil Signature 0W-40 in my 2016 Ram 2500 6.4L 4x4. I switched to Amsoil at 500 miles and have just recently changed the oil again at 6000 miles. I have been getting reasonable mileage with my new truck (about 14.5 mpg average), considering I have the 6.4L and it's a 4x4. I recommend that if you plan to use Amsoil, to pay the small amount to become a Preferred Customer (currently $20 per year), because it will pay for itself in the savings per quart of oil (about $12.50 to $8.50 for the 0W-40 Signature Oil). A quick story ... I turned a friend on to Amsoil, he started using 5W-30 Signature in his 2007 Nissan Quest with 60,000 miles. As early as the drive home from my house after changing the oil, his 15 year old son with a learner's permit could feel it running smoother and quieter, and now only one month later, he is already seeing 1-2 mpg increase in fuel economy. He plans to change his oil again at about 5000 miles and will then change it annually.

I use 5w30 and 5w20 in all of my cars

Longevity, reliability and ultimate protection

I love the fact that AMSOIL allows the freedom from changing oil all the time.25000 mile oil is wonderful!Buy this product and simplify your life.

I purchased the Signature Series 0W-20 oil for my son for his wife's 2013 Subaru Forester for topping up. Subarus with the 2.5 boxer engine seem to use some oil in general. They live far enough away that I can't help with oil changes, but they have two Subarus and they keep oil in the vehicles for top-up's especially on long trips.

Use this in my wifes Ford Explorer 4x4. It's got over a 100,000 on it and never had a problem and it run's like a top.

I've been using AMSOIL products for 3 years now, started with engine oil and have also explored brake fluid, gas additive, grease, tranny fluid and gear oil. I began with the XL line of products then moved to the signature series and know that is all that I use. I would recommend AMSOIL products to anyone.

Been using Amsoil fo about 35 years with great results in performance and better gas mileage

Great product because of the extended drain intervals that can sometimes go beyond their 25k recommendation. Just be sure to have an oil analysis done once in a while.