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AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil

Product code : ALMQT-EA

5 star rating Read 6,894 reviews

Customer Rating

5

90% would recommend

  • 5 6710
  • 4 130
  • 3 24
  • 2 9
  • 1 21

AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil

5 star rating Based on 6,894 reviews
  • 5 star rating
    My 17 year old engine has never run quieter or smoother
    By  ALFREDO,  a  Verified Buyer  on  September 23, 2025
    My 17 year old engine has never run quieter or smoother
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Greatest oil
    By  BRETT,  a  Verified Buyer  on  September 22, 2025
    This oil is perfect for my 800 hp Mustang! I love it! Trust AMSOIL will protect my car to the furthest extent!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil or bust
    By  MATT,  a  Verified Buyer  from  Bristol, CT USA  on  September 22, 2025
    I have been using AMSOIL motor oil for many years, at least since 2014 maybe earlier. I had read about a ball bearing test and very good results, so I decided to tr5y it in both my Harley and my Nissan 350z. Both ran very well and seemed to like the Amsoil. I usually use either high mileage synthetic for my Z at 170k miles or in my Harley and newer cars signature series. I just changed my oil yesterday at 10,000 miles on my 2024 Acura Integra Type S. this high performance 4 cylinder is fantastic and is a high revving engine, so it is important for peace of mind to have the very best oil in there I can. I changed it at 1500 miles, after break in then again at 5000 miles, and now a 3rd oil change at 10kl miles. I feel very good about it. My car runs excellent and after new oil, filter, and air filter it seems renewed, and healthy, it just feels good to know I have new Amsoil in there, good for 25k miles and it will never see more than 5000 miles in my car. Engines are expensive oil not so much, change it often.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Telluride
    By  BRENDON,  a  Verified Buyer  from  Lancaster,Pa  on  September 21, 2025
    Oil does make a difference. The car runs smoothly and feels like less effort is needed in accelerating.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great oil
    By  MATT,  a  Verified Buyer  on  September 21, 2025
    Great stuff
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Believe in the long term advantages of this product!
    By  RAY,  a  Verified Buyer  from  NC  on  September 20, 2025
    Will install with my next oil change and will never turn back. I believe in the technical advantages of Amzoil 100 % synthetic. Why? I intend to keep my new car a long time. This product offers resons why it it is a superior product.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Best oil in the world
    By  WILL T,  a  Verified Buyer  from  Texas  on  September 19, 2025
    This is the best oil in the world. I’ve used this product many times and very happy with the results.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great stuff !
    By  LAZARO,  a  Verified Buyer  from  Sebring Fl  on  September 19, 2025
    Love this oil, really have noticed my 03 lancer ES run smoothly.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Super easy
    By  ROGER,  a  Verified Buyer  from  Illinois  on  September 19, 2025
    I simply ordered the kit I needed and it all came in one package. Once I clicked on the pay now it was here really quick. Everything I needed was in one box and neatly packaged. I'm only on mile 120 but so far so good.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great oil... actually the best oil there is
    By  TONY,  a  Verified Buyer  from  Virginia  on  September 18, 2025
    I use my truck... I put the 25k AMSOIL but change the oil every 10k.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    It is the only motor oil I use in my vehicles
    By  ANDREW,  a  Verified Buyer  from  Brandy Station, VA  on  September 18, 2025
    Over 20 years of using Amsoil with no engine failures, improved mileage, and negligible engine wear. I won't use anything else.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Noticeable results in performance
    By  DAREN,  a  Verified Buyer  from  Buffalo NY  on  September 17, 2025
    I've been a royal purple guy for 20 years. I was doing some research and decided to change to Amsoil. I've seen a noticeable difference in engine performance and better fuel economy. I would highly recommend this oil.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Excellent fluof
    By  NATASHA,  a  Verified Buyer  on  September 16, 2025
    Great brand excellent product
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great oil
    By  RON,  a  Verified Buyer  from  ohio  on  September 16, 2025
    I’ve used this product for 40 years without fail. I have a couple of high compression motors that I want to be sure gets the proper lubrication. This oil never fails. both engines run well and never overheats, or seem like they’re straining. fast customer service from Amsoil as well.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Best in the business
    By  KENNETH,  a  Verified Buyer  on  September 15, 2025
    Well worth the investment. Best performance oil in the business.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    thanks
    By  MARK,  a  Verified Buyer  from  MA  on  September 15, 2025
    i got this based on all the reviews and claims that its the best. i saw it win a pour out race at -30degrees on youtube against another brand haha
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Improved Fuel consumption
    By  JOHN,  a  Verified Buyer  from  Alberta  on  September 15, 2025
    We did the first (10,000km) oil change on our new Subaru Forester. To my surprise, immediately subsequent to the change, the fuel consumption dropped from 7.8 l/100km to 7.2 l/100km. The savings in fuel costs will offset the premium paid for Amsoil.
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  • 5 star rating
    Amsoil 4 quart bottle 0w-20
    By  JESSE,  a  Verified Buyer  from  NV  on  September 15, 2025
    Great stuff!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil oil filter and oil kit for my F150
    By  JESSE,  a  Verified Buyer  from  NV  on  September 15, 2025
    I was turned on by Amsoil ever since I went to SEMA 2024 and had the opportunity to speak with an Amsoil representative. I forgot the lady's name but she was helpful, answered my questions, and very nice. When I went to the Amsoil website, I was taken back by all the products available, and the fleet management system on the site. I was sold, I bought several kits for my vehicles, and will continue using the products. Thank you Amsoil. You're the greatest.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great Service
    By  JOHN,  a  Verified Buyer  from  Texas  on  September 15, 2025
    Great Service. I love the convenience of working with you guys.
    Bottom Line
    Yes, I would recommend this to a friend.
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