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

Product code : ALMQT-EA

5 star rating Read 6,861 reviews

Customer Rating

5

90% would recommend

  • 5 6677
  • 4 130
  • 3 24
  • 2 9
  • 1 21

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

5 star rating Based on 6,861 reviews
  • 5 star rating
    Amazing oil at a good price!
    By  BRYAN,  a  Verified Buyer  on  April 20, 2026
    Amazing oil at a great price!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    My Wintertime Oil Change
    By  CURTIS,  a  Verified Buyer  from  Texas   on  April 20, 2026
    Late Fall oil change in 0W30 protects even on below zero mornings and we do not have many of those here in Texas.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Just me
    By  DON R,  a  Verified Buyer  from  New Smyrna Beach Fl.  on  April 20, 2026
    The oil is over kill for my 2.7 Toyota Venza ,but that's just me ,I like knowing that .
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Best oil
    By  LYLE,  a  Verified Buyer  from  Arizona   on  April 19, 2026
    I use Amsoil 0w40 in my 2015 Challenger SRT392 along with Amsoil oil filter. I feel it’s the best oil for this car. I’ve been using Amsoil since 1999 and will never change.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    The Best
    By  LYLE,  a  Verified Buyer  from  Arizona   on  April 19, 2026
    Been using Amsoil since 1999 first in my motorcycles and then all of my vehicles starting in 2001 and have never looked back. It’s all I’ll ever use and Amsoil filters. Highly recommend Amsoil to everyone I know, but not all will listen and take advantage of the best oil in the business if you ask me. I use 0w30 in my Ram 1500 with a HEMI of course. And the same in my Jeep Wrangler JKU. LOVE THIS OIL.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil oil
    By  NORMAND,  a  Verified Buyer  from  Grenville PQ CA  on  April 19, 2026
    The best oil money can by !!!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    La qualité wow
    By  PASCAL,  a  Verified Buyer  on  April 19, 2026
    Huile de très haute qualité mon auto n’a plus ce petit claquement de moteur qu’il a toujours eu même si je mettais de la très bonne huile avant de connaître Amsoil
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  • 5 star rating
    Probably the best oil ever
    By  KEN,  a  Verified Buyer  from  Orlando  on  April 18, 2026
    This is probably the best oil ever used in my engine.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil 0-20, 5-30
    By  ROBERT,  a  Verified Buyer  from  Mississippi   on  April 17, 2026
    I use 0-20 in my bmw x-1 suv, and 5-30 in my wife x-5 they both perform perfectly even the bmw service dept said excellent choice, this speaks volumes for them as they ate the best techs out there Roadshow Bmw memphis tn
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    5-30 signature
    By  DAN,  a  Verified Buyer  from  Wisconsin   on  April 17, 2026
    I have used this specific oil for 15 years,now on my Z06, Cadillac and Ram.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    5W-50
    By  ALLAN,  a  Verified Buyer  from  Okanagan BC  on  April 03, 2026
    Product arrived on time as advertised. Quality, ease of pouring and the clear liquid level gauge is a nice feature. The engine seems to like this oil as there is very little engine noise while running.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    For Added Protection
    By  GARY,  a  Verified Buyer  from  South Carolina  on  March 30, 2026
    Have been running the Signature Series 5W-20 in my son's 2015 F150 with the 5.0 Coyote since we purchased it last year with 148,000 miles. Ran the AMSOIL Engine Flush for 15 minutes before our first oil change with AMSOIL because I want the best protection. Seems to run quieter and hope to get another 150K miles, running all fluids on AMSOIL... Signature Series Engine Oil, Signature ATF, Severe Gear for Differentials, Signature ATF for Transfer Case, P.I. Performance Improver every 4K miles, Upper Cylinder Lubricant, Dominator Coolant Boost
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Mustang Oil Change
    By  CARROL,  a  Verified Buyer  from  South Carolina  on  March 28, 2026
    Great product and customer service.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Best fully synthetic made
    By  TERRY,  a  Verified Buyer  from  Houston, TX  on  March 26, 2026
    I’m running a 2019 Sierra with the 6.2L. My truck isn’t in the recall range, but I still want to have the best oil in it. And my employer pays for my oil changes. I don’t like what I’m reading about the manufacturer’s reasons for using 0W-20/40 in these engines (gas mileage). So I’m using a thicker oil. I’m seeing zero difference in mileage since I switched to this oil, which is good.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Best oil
    By  BENITO,  a  Verified Buyer  on  March 25, 2026
    After 20k miles still good
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    25k
    By  BENITO,  a  Verified Buyer  on  March 25, 2026
    I change it every year less than 25k miles and the oil viscosity still good
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Nothing better for your engine.
    By  ROLAND K,  a  Verified Buyer  from  Silverwood, Michigan  on  March 25, 2026
    I use this in every gas vehicle engine I own(5). I change it every 5k with and Amsoil filter & never a mechanical problem.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    0-20
    By  CHRIS,  a  Verified Buyer  on  March 25, 2026
    Works great
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great product
    By  SUNNY,  a  Verified Buyer  on  March 25, 2026
    Arrived on time, works like it should have no complains.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Just started using
    By  STEPHEN,  a  Verified Buyer  from  Worthington Ohio  on  March 24, 2026
    Just started using in my Toyota Tacoma (very happy) I finally came around on my every day truck and soon my wife's car. I always use Amsoil Z-rod in my old Corvette and think I will be all set now will my oil changes.
    Bottom Line
    Yes, I would recommend this to a friend.
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