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AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil

Product code : ASLQT-EA

5 star rating Read 6,880 reviews

Customer Rating

5

90% would recommend

  • 5 6696
  • 4 130
  • 3 24
  • 2 9
  • 1 21

AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil

5 star rating Based on 6,880 reviews
  • 5 star rating
    The Best Oil Available !
    By  DAVID,  a  Verified Buyer  from  Milwaukee Wi  on  February 23, 2025
    This oil is the best on the market !
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Thank you!
    By  BOOKER,  a  Verified Buyer  from  Ohio  on  February 23, 2025
    It’s fantastic to get a top-tier product at such a great discount. I signed up for my annual membership before making my first purchase and am excited to do more business with Amsoil in the future. Thank you for all your help!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Best on the market
    By  RUDY,  a  Verified Buyer  from  SoCAl  on  February 23, 2025
    Car runs smoother and oil stays cleaner longer with Amsoil. I used the best from the red horse brand and the one with the funny color. Amsoil is the absolute best in the many years of oil changes.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Trusted
    By  DB,  a  Verified Buyer  from  Qualicum Beach  on  February 22, 2025
    I've used Amsoil since the seventies when it was introduced to me by a colleague at work. He was running a race-prepped 427 Ford Fairlane. I've used it in all sorts of vehicles from a Land Cruiser to a Ferrari and have never had any lubrication issues. I just finished swapping a modified crate LS3 into a stepside and used Amsoil everywhere in the drivetrain. The best oil!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Outstanding Engine Protection
    By  RON,  a  Verified Buyer  from  South Carolina  on  February 21, 2025
    I have been using this oil in my 2015 F150 and 2020 Ford Explorer, since new. Both vehicles are turbocharged. I have not seen any indication of oil burning. This is the only oil I will use in these vehicles, and since I perform all maintenance I have control over the oil products used.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Good synthetic oil
    By  RALPH,  a  Verified Buyer  on  February 20, 2025
    Been using this oil for almost 10 years now
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    The best there is
    By  TIMOTHY,  a  Verified Buyer  from  Texas  on  February 19, 2025
    I have been using Amsoil products for over 20 years and never had any failures or related issues. For engine oil I use the Signature Series Full Synthetic 5W-30 and run it a full year which equates to 20k miles in my truck. I use the Amsoil oil filter. My friends think I am crazy for going 20k without changing the oil, but my truck now has 357k miles and never had an engine failure. I notice it does not burn oil using the synthetic compared to the dino juice. Save a little money and buy the gallons instead of quart bottles, plus there is less waste that way.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Happy motor
    By  Tom,  a  Verified Buyer  from  Socal  on  February 19, 2025
    Engine runs the smoothest with Amsoil. I'll only run amsoil in my cars. Both current cars have direct injection so LSPI protection is high on my list as well. Lab results excellent.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    2009 Dodge Ram
    By  SMP,  a  Verified Buyer  from  Arkansas   on  February 17, 2025
    I bought my Dodge Ram used with 35,000 miles on it. A friend of mine suggested Amsoil. Have used nothing else in it. Very pleased with performance.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Synthetic motor oil
    By  RUSSELL,  a  Verified Buyer  from  Summerville sc  on  February 16, 2025
    Switched to this oil and oil pressure has increased in one oil change and cleaned out a lot of my engine parts with first oil change. Lubricants the top end of my engine and no more dry starts
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 4 star rating
    GMC So far so good non scientific
    By  ISAAC,  a  Verified Buyer  from  Goose Creek   on  February 16, 2025
    2008 4X4 GMC Sierra 6.0 VortecMax. 129,000 miles I’ve only use this oil since first oil change. Truck was delivered with 4 miles. No engine problems. Change interval I used was 6 months or 5,000 miles.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil For The Win
    By  ERIC,  a  Verified Buyer  from  Sullivan County NY  on  February 15, 2025
    I switched to Amsoil quite a few years ago after using multiple different top brands. I instantly noticed a difference in how smooth the motor felt in both diesel and gas motors. I would always notice some oil consumption with other brands. Since I switched to Amsoil I never have any oil consumption. The same amount of oil comes out that I put in with oil changes. Highly recommend Amsoil products.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Gtr
    By  DAVID,  a  Verified Buyer  on  February 15, 2025
    Fast delivery and keep my motor running healthy
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    5w/30
    By  PATRICK,  a  Verified Buyer  from  Alabama  on  February 15, 2025
    Probably the best oil on the market. Have better oil pressure and a quieter engine. 2009 chevrolet silverado
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Excellent product!
    By  DUSTIN,  a  Verified Buyer  from  Tenino, Washington   on  February 14, 2025
    Excellent products! If you want your vehicle to last longer and maintain performance, use this product.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Signature series
    By  MATTHEW,  a  Verified Buyer  from  NC  on  February 13, 2025
    Great oil!! Definitely holds up to my lead foot. The wear protection and mileage you get out of this oil is great.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Beat Oil for the Money and protection
    By  JOE,  a  Verified Buyer  on  February 12, 2025
    Been using the Signature series oil in my daily driver for 8 years. It really saves you money in the long run because you’re only changing your oil 15k-25k depending on conditions. Car has over 200k on it and still has plenty of power just like it did when it was new. I will always use the signature series oil.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Generator oil change
    By  LARRY,  a  Verified Buyer  from  Maine  on  February 10, 2025
    Great product
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    A Better Solution
    By  Mconniff,  a  Verified Buyer  from  Slidell, Louisiana  on  February 10, 2025
    I've been using this product since I purchased my 2016, Ram Power Wagon. Even when the dealership makes the mistake of using their oil I always thank them for the engine flush, butt use the oil I brought. Never have I had an issue with my truck while using this product, no knocks or ticks just a smooth running engine just like the first day I cranked her over back in May of 2016. My truck now has 176k miles and is still running smoothly. I recommend this product if you care about your vehicle.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Best ever!
    By  RUSSELL,  a  Verified Buyer  from  Tennessee  on  February 07, 2025
    Amsoil makes the very best....synthetic oil! When you pay big bucks for your performance motor, you need to protect your investment. There is no better way to do that than use Amsoil products!
    Bottom Line
    Yes, I would recommend this to a friend.
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