Skip to Main Content
Shop by Vehicle

Customer Ratings & Reviews

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

Product code : ALMQT-EA

5 star rating Read 6,897 reviews

Customer Rating

5

90% would recommend

  • 5 6713
  • 4 130
  • 3 24
  • 2 9
  • 1 21

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

5 star rating Based on 6,897 reviews
  • 5 star rating
    Very good products.
    By  MARK,  a  Verified Buyer  from  Buford Ga   on  February 03, 2025
    Glad to do business with amsoil
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best There Is
    By  ROBERT,  a  Verified Buyer  from  Augusta GA  on  February 02, 2025
    Excellent performance, great price for the value, and the engine runs better and with less effort. Truly the perfect oil for any application, sports car, truck, everyday driver, and classic.
    Was this review helpful?
  • 5 star rating
    5w-20 Signature Series
    By  CREAG,  a  Verified Buyer  from  London Ontario Canada  on  February 01, 2025
    Best oil I have ever used. # Canadian Winters
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great product
    By  BLAISE,  a  Verified Buyer  from  Ontario  on  January 31, 2025
    I saw a comparison test been done with all the Synthetic motor oils and I was surprised that the oil I was using for my vehicle was not even close to the top of the test, but this Amsoil was. When I purchase a new F150 in 2019, I replaced the original oil with Amsoil and never looked back. I have over 200th on the truck now this engine runs perfect. I do oil changes every 20,000 km and never see any metal particles on the pan. I would recommend this to everyone.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Love Amsoil Products
    By  KURT,  a  Verified Buyer  from  Los Angeles   on  January 31, 2025
    I have Amsoil in the whole drivetrain and plan on getting lots of miles out of this vehicle.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Auto engine oil
    By  LARRY,  a  Verified Buyer  from  Alabama  on  January 30, 2025
    Have used this product for many years in my Toyota Highlander. I highly recommend it.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Won't use anything else in my 2006 Corvette C6Z
    By  KEN,  a  Verified Buyer  from  NV  on  January 30, 2025
    This oil holds up to everything you can throw at it and in any situation. I highly recommend it for all vehicles.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Signature Series Oil
    By  RANDY,  a  Verified Buyer  from  Colorado   on  January 29, 2025
    I've been using 5W-30 Signature Series oil in my Toyota Tacoma since I bought it new in 2012. I now have 240,000 miles on my truck and it's still running strong with no maintenance issues. I strongly recommend this oil over any and all OEM oils.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best oil on the market
    By  SCOTT,  a  Verified Buyer  from  Grand Rapids, Mi  on  January 28, 2025
    The only oil I use in my vehicles and equipment.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    5w/30
    By  PATRICK,  a  Verified Buyer  from  Alabama   on  January 28, 2025
    This is the best oil I've ever used. I have much better oil pressure in my 2009 chevrolet silverado. It should help with the lifters.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Just Works
    By  CHRISTOPHER,  a  Verified Buyer  on  January 27, 2025
    Use their oils in my track car and two others. Have sent half a dozen samples for testing and always great results. I could easily take the oil a lot further. But I’m about the cheap insurance when it comes to performance.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Wife's Mazda CX-9
    By  NorthStar71 ,  a  Verified Buyer  from  North Carolina   on  January 26, 2025
    When it's-20° below outside that's when Amsoil Signature Series really shines
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Chevy Impala 3.4 Liter
    By  BRAD,  a  Verified Buyer  from  Iowa  on  January 25, 2025
    317,000 miles. Change oil around 8000 to 10,000 interval.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Top Product!
    By  JBF,  a  Verified Buyer  on  January 25, 2025
    Gives me peace of mind for ultimate protection! Best choice over Mobil 1, Castrol, Pennzoil, etc. Will purchase again
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    everything was fine, when ordering
    By  JOHN AND KAY,  a  Verified Buyer  from  st. marys, ohio  on  January 25, 2025
    everything was fine
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best oil I have used
    By  BRIAN,  a  Verified Buyer  on  January 25, 2025
    The best oil I have put in my vehicle, cleared up all my oil consumption issues and I haven’t had a 1qt low oil message in over 9,000 miles. I change my oil every 3500 miles but even on mobile 1 and mobile 1 extended performance my oil light would come on every 2000 miles. Hasn’t occurred since I switched.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Way better than the alternative.
    By  SAMUEL,  a  Verified Buyer  from  Philadelphia, PA  on  January 24, 2025
    I put it in my RAV4 crankcase. Some good stuffs.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Wow
    By  SAMUEL,  a  Verified Buyer  from  Philadelphia, PA  on  January 24, 2025
    Very delicious.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Good stuff
    By  JERRY,  a  Verified Buyer  from  Ky  on  January 23, 2025
    I've been useing this stuff for 6yrs now and in that time I've had 3 cars with well, 1 320k 1 460k & 1,200k. It's great oil and I've been doing 10k oil changes for oil to last like that it must be good. But I use there oil & matching filters. Had a Ford edge with 200k was sounding rough on start up, like a lawnmower when I 1st got it and oil pressure light was coming on changed oil with amsoil & filter and my wife's been driving it for months now and hums like a sowing machine now nice & quite. Also use it in my pride & joy my dad's old 73 Pontiac firebird formula with the original poncho moter in it. Great oil and is no higher than what's on the shelf when u set up your own account and so much better oil.....if u want to hit 400+k use this oil....
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Oil
    By  JAMES,  a  Verified Buyer  from  California   on  January 23, 2025
    Engine seems to run smoother and quieter 👍
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?