☰
Shop by Vehicle
Find AMSOIL Near You

Customer Ratings & Reviews

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

Product code : AMRQTC-EA

5 star rating Read 6,871 reviews

Customer Rating

5

90% would recommend

  • 5 6687
  • 4 130
  • 3 24
  • 2 9
  • 1 21

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

5 star rating Based on 6,871 reviews
  • 5 star rating
    Smooth
    By  EVERETTE,  a  Verified Buyer  on  March 19, 2025
    The car runs so much smoother now.
    Was this review helpful?
  • 5 star rating
    Best
    By  JON,  a  Verified Buyer  on  March 18, 2025
    Best oil
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Amsoil crankcase oil
    By  KEITH,  a  Verified Buyer  from  New BrunswicK Ca.  on  March 18, 2025
    As with the the rest of the product line - it just works. motor runs smoother in the summer time heat and reduced warm up periods in the winter.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    not installed yet weighting for Whipple will report asap
    By  MICHAEL,  a  Verified Buyer  from  FL  on  March 18, 2025
    will review after some use but I can say for the 60w its doing a great job in my 448 ci in Hemi here in FL
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best Lubricants Ever
    By  MIKE,  a  Verified Buyer  from  Sanford, FL  on  March 17, 2025
    These are the best lubricants ever. And now I can order them online for extra savings and convenience! Great job and thank you for the Amsoil hat. God bless!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Excellent Oil
    By  DAVID,  a  Verified Buyer  from  Dayton TX  on  March 17, 2025
    This stuff is Awesome I Hit Recommend this Oil to Anyone you won’t Regret it Love it
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best 5w20
    By  DENNIS,  a  Verified Buyer  from  Alabama   on  March 16, 2025
    Best oil I ever used in my challenger, nite & day difference in how it runs & drives
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Oil for a 2014 Ram 1500 5.7 Litre Hemi
    By  JOHNNY,  a  Verified Buyer  from  Peace River, Alberta  on  March 16, 2025
    Truck runs great with this oil, works just as expected.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Signature 5w30
    By  DUSTIN,  a  Verified Buyer  on  March 16, 2025
    Great oil at a resonble price. Have used amsoil for years in all my vehicles. Good delivery times. Will continue to use for many more years I'm sure
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Again quality
    By  MICHAEL,  a  Verified Buyer  from  Brewer, Maine  on  March 16, 2025
    Along with the amsoil filters of oil consumption with my fleet has more than cut in half
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    I wouldn’t run any other brand
    By  MARK,  a  Verified Buyer  from  Bloomfield NY  on  March 15, 2025
    I run Amsoil in everything I own
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    0w-20 oil
    By  JOHN,  a  Verified Buyer  on  March 15, 2025
    Great oil I don't care what anybody says oil is not just oil won't use anything else but this
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great product
    By  RICKI,  a  Verified Buyer  on  March 15, 2025
    Best oil on the market! Been using Amsoil for over 10 yrs now. No complaints from me.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Worked in Prius
    By  CHARLES,  a  Verified Buyer  from  North Alabama  on  March 13, 2025
    Increased mileage per gallon from 45 to 47. Will be able to run extended distance. My only “complaint” filters were not available at time of purchase of oil.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Buy it
    By  PHILIP,  a  Verified Buyer  from  VA  on  March 12, 2025
    Bought this for my Ram TRX.. Wanted the best lubrication for this beast of a truck!!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best oil around highly recommended
    By  AARON,  a  Verified Buyer  on  March 10, 2025
    I wouldn’t use any other oil than amsoil!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    The best oil
    By  BRADLEY V. ,  a  Verified Buyer  on  March 10, 2025
    This is just my opinion but I think AMSOIL is the best synthetic oil on the market. Worth the money to me
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    THE BEST
    By  JOE,  a  Verified Buyer  on  March 10, 2025
    I 100% recommend this best oil you van buy
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    I got over 310000 miles on my2007 f150 using this oil
    By  TARVARES,  a  Verified Buyer  from  Rusk Texas   on  March 10, 2025
    I replaced it due to low oil pressure. I will continue to use this oil in my diesel and with more research may be my boat
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    The best
    By  Jay,  a  Verified Buyer  from  Atlanta   on  March 09, 2025
    The best!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?