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AMSOIL Signature Series 5W-50 100% Synthetic Motor Oil

Product code : AMRQT-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 5W-50 100% Synthetic Motor Oil

5 star rating Based on 6,845 reviews
  • 5 star rating
    GREAT PRODUCTS
    By  JESSIE,  a  Verified Buyer  from  AR  on  February 28, 2026
    Always get great products at great and fair prices, good delivery time as well.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Engine oil
    By  GERALD,  a  Verified Buyer  from  Laurel Mt  on  February 28, 2026
    I believe this to be one of the best full synthetic oils on the market. The previous owner used it in my 2016 Chevy HD and I will continue
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Oil
    By  ERIC,  a  Verified Buyer  on  February 28, 2026
    Best oil brand and product is great
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Ford f150 2.7 turbo
    By  HERBERT,  a  Verified Buyer  on  February 27, 2026
    I have got 270,000 on my truck it has had amsoil since the first oil change motor still runs like new
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Loyal Customer
    By  MICHAEL,  a  Verified Buyer  from  Utah  on  February 27, 2026
    The Amsoil product works great, prompt shipping and good prices! It's nice to have a product I don't to go search for!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Good stuff
    By  ALEX,  a  Verified Buyer  from  AZ  on  February 26, 2026
    Put this stuff in your car. It works fantastic.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    RAM
    By  ROBERT,  a  Verified Buyer  from  Brooksville, Fl  on  February 25, 2026
    Did my first oil change with Amsoil Synthetic and Insane Diesel Bypass Filter install looking for 15k oil changes. I will be doing oil sample at 10k to see if 15k is doable.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great oil. However one container was busted and oil leaked
    By  MATT,  a  Verified Buyer  on  February 25, 2026
    Great oil. However one container was busted and oil leaked. This is frustrating at these prices cause I know the oil is good and want to purchase but since it’s only available shipping, there are no other choices.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Oil works great!
    By  RICHARD,  a  Verified Buyer  on  February 24, 2026
    Never any complaints about this oil, works great!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    The best oil I’ve used so far
    By  KURT,  a  Verified Buyer  from  Virginia  on  February 24, 2026
    Love the oil. I’ve been wanting to try this brand for a long time now and it’s been great so far.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Only AMSOIL
    By  PETE,  a  Verified Buyer  on  February 24, 2026
    Been running AMSOIL for years Best out there.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil 5 50
    By  ERIK,  a  Verified Buyer  from  Wyoming  on  February 23, 2026
    I chose amsoil 5 50 after reviewing its performance on f150 forums. It outperforms motorcraft 5 50 and was a great choice for my supercharged charged 5.0
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Best oil
    By  JAY,  a  Verified Buyer  on  February 23, 2026
    I’ve ran Amsoil for years. Never had any problems with oil. There app and website makes it easy to order complete kits and quantities.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Perfection in a bottle!
    By  DOMINICK ,  a  Verified Buyer  from  NY  on  February 23, 2026
    Every 10,000 miles without fail, I crack open 8-1/2 quarts of my favorite oil and I start pouring this liquid gold into my 2021 Toyota Tundra. Which has 105,000 miles with the help of AMSOIL!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Worth every cent
    By  JAY,  a  Verified Buyer  on  February 22, 2026
    The only oil I run in vehicles I care about. Specifically this oil weight I use on my 2018 Honda civic si.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Efficient and Superb oil product
    By  PHILIP,  a  Verified Buyer  on  February 20, 2026
    I protect my motor vehicles with the highest rated quality synthetic oil products. That being said, AMSOIL shows and proves every time I use my beloved family vehicles. AMSOIL keep up the amazing work and research!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Runs quiet in 5.3L L84 GM engine
    By  Proffittmarke ,  a  Verified Buyer  from  Springfield, Missouri  on  February 18, 2026
    At 140,000 miles, my engine started to be a little noisy. I bumped it up from 0W 20 to 0W 30 signature series. Runs quiet and smooth.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Love this product
    By  JONATHAN,  a  Verified Buyer  on  February 18, 2026
    I’ve been using this product for the last 12 years. It makes my engines run quieter cooler and have no issues.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 4 star rating
    Thin Oil
    By  DAVID,  a  Verified Buyer  on  February 18, 2026
    It's pricey watery oil. So far, so good.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Good
    By  JUANcho,  a  Verified Buyer  from  California   on  February 18, 2026
    Muy buenos los aceites
    Bottom Line
    Yes, I would recommend this to a friend.
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