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AMSOIL Signature Series 0W-40 100% Synthetic Motor Oil

Product code : AZFQTC-EA

5 star rating Read 6,845 reviews

Customer Rating

5

90% would recommend

  • 5 6662
  • 4 130
  • 3 23
  • 2 9
  • 1 21

AMSOIL Signature Series 0W-40 100% Synthetic Motor Oil

5 star rating Based on 6,845 reviews
  • 5 star rating
    Pretty free flowing
    By  EDWARD,  a  Verified Buyer  on  March 18, 2026
    Oil pours well from the bottle into the engine.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Works well for me
    By  JEREL,  a  Verified Buyer  on  March 17, 2026
    I’ve been using AMSOIL in all my vehicles for about 30 years and have never any issues with the engines, so as far as I’m concerned, it does an excellent job.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great choice
    By  ADBIED D,  a  Verified Buyer  from  Chicago   on  March 17, 2026
    I used this for my Evo highly recommend it
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great AMSOil 100% Synthetic for my Nissan
    By  JASON,  a  Verified Buyer  from  Houston, TX  on  March 17, 2026
    I use this oil for my 2008 Nissan 350Z.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    5-30 Synth
    By  MARTY,  a  Verified Buyer  on  March 16, 2026
    Second round of using in my wife’s Caddy CT6. The bundle option was very convenient. I’ll begin using in my Silverado soon. Old Product looked great coming out of pan (like we could’ve gotten another 3k miles out of it).
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Highly Recommend.!!
    By  VICTOR,  a  Verified Buyer  on  March 15, 2026
    AMSOIL stands out for its quality and reliability. It’s a premium product that delivers exactly what it promises. If you want better engine protection and longer oil life, I highly recommend AMSOIL.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Ams oil products
    By  RONNIE,  a  Verified Buyer  from  La Veta co  on  March 15, 2026
    No matter what product I use of ams oil, they always deliver and never let me down.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    One of the best oils made
    By  STEVEN,  a  Verified Buyer  from  Massachusetts  on  March 13, 2026
    My engine sounds fantastic when this oil is in it and the metal parts per million are very low after an oil change using this oil.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great motor oil
    By  CHRIS,  a  Verified Buyer  from  Twin Cities, MN  on  March 13, 2026
    I've used this oil for a few years in all four of my family's Subarus. All have the same 2.5L H4 engine, are 2014, 2015 models with between 80 and 140K miles. I change twice a year at around 5K miles. I know the Amsoil folks claim this oil is good for lots more miles, but we drive short trips and so I change it more often. I add less than 1 qt. between changes, so oil consumption is low for such high mile engines. All engines start, run and drive very smoothly and quietly. I definitely recommend this product!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    My duaghter's Alfa loves it
    By  PAUL,  a  Verified Buyer  from  NJ  on  March 13, 2026
    My daughter purchased a used Alfa Romeo Stelvio. I'm not sure what oil was in it to begin with but we had to had oil at least once in a 5000 mile interval. We have been using the Amsoil ever since and have never had to add between changes, still at 5000 miles.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil products
    By  D,  a  Verified Buyer  from  Nunya  on  March 12, 2026
    Ive been using amsoil for years, from racing ATVs, Drag cars, daily drivers, ect. Member for awhile. I try to convince everyone to switch. Never had a single complaint. Ships always fast and customer service has never done me wrong.... just buy it already, its worth the nickels and dimes.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great Product
    By  JASON,  a  Verified Buyer  from  Smithfield Va  on  March 12, 2026
    Have been a loyal Amsoil customer since 2007. I’m more than pleased to run this product. I will always run Amsoil in every product I own.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Simply the best oil
    By  MICHAEL,  a  Verified Buyer  from  Quebec Canada  on  March 12, 2026
    When I put in my motor, the level of functionning noise reduce by half
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Recurring orders
    By  JOHN,  a  Verified Buyer  from  Arkansas  on  March 12, 2026
    This review is not about the best oil ever. Rather, it is a recommendation that when ordering off the web site, one should have thee option to repeat any of thee previous orders and /or mix and match from previous orders into one order.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 4 star rating
    Oil
    By  BRYAN,  a  Verified Buyer  from  IA  on  March 12, 2026
    Oil is great
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    5w-30 oil
    By  PAUL,  a  Verified Buyer  from  Bakersfield   on  March 12, 2026
    Best investment for my vehicles! Mico encapsulated oil! Worth every penny! Protection forever!!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Long ride.
    By  TRACY,  a  Verified Buyer  from  Wyoming  on  March 12, 2026
    Good oil. Better gas pileage.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great Engine Oil
    By  PJM,  a  Verified Buyer  on  March 12, 2026
    Great engine oil. Engine internals have no varnish and very little to no wear.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    SMOOTH PERFORMANCE AND UPGRADE
    By  JOSE,  a  Verified Buyer  from  Reno, NV  on  March 11, 2026
    Huge difference in all our vehicles in our stable. This is a must upgrade from a OW-20 especially if you have over 75K miles or 100K miles.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great oil and filter
    By  ZACHARY,  a  Verified Buyer  from  Kingman Arizona   on  March 11, 2026
    The oil and filter works awesome
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