Skip to Main Content
Shop by Vehicle

Customer Ratings & Reviews

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

Product code : ASLQT-EA

5 star rating Read 6,876 reviews

Customer Rating

5

90% would recommend

  • 5 6692
  • 4 130
  • 3 24
  • 2 9
  • 1 21

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

5 star rating Based on 6,876 reviews
  • 5 star rating
    Never a regret
    By  The Doc,  a  Verified Buyer  from  Belleville , Ontario  on  February 10, 2019
    I have been using Amsoil in my vehicles since 1986. After having to change a timing chain in an earlier vehicle...it was clear ( internally ) how good Amsoil actually is. The chaincase was as clean as if it was just made. That vehicle continued on to + 260,000km with no oil leaks or other loss. Amsoil....I am a fan for life!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best oil
    By  flight,  a  Verified Buyer  from  Texas  on  February 10, 2019
    I love all AMSOIL products
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best oil you me or anyone else can buy.
    By  Rusty,  a  Verified Buyer  from  Herington, Kansas  on  February 09, 2019
    I use Amsoil in all my vehicles, and I have many. From my Shelby GT 500 to my ATV and lawn mower. Best oil you can buy!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    The Best Oil
    By  Reno P,  a  Verified Buyer  from  Sugar Grove ILLINOIS  on  February 09, 2019
    Been using Amsoil Signature Series 5w20 for over 18 years and have been extremely happy with it. I go 15000 miles between changes and never use more than a half quart between changes. It's the BEST.
    Was this review helpful?
  • 5 star rating
    Always satisfied with Amsoil
    By  don't use one,  a  Verified Buyer  from  Ballston Lake, NY  on  February 09, 2019
    I use this in both of my vehicles; one specs 5W-20, the other 0W-20. It gets down to -15 degrees where I live in upstate NY and I depend on Amsoil to provide effective lubrication at temperatures where other oils struggle to perform. I generally put over 250,000 miles on each vehicle, and have never had one consume any Amsoil. Totally satisfied.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best oil period
    By  axecut,  a  Verified Buyer  from  mn.  on  February 08, 2019
    I have to use the best oil. The cost of not using Amsoil will put me out of business
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best Oil Ever
    By  rblilly,  a  Verified Buyer  from  Corpus Christi, Texas  on  February 06, 2019
    I do 10k mile oil changes per Toyota, but this oil comes out still clean, not even black. I have no doubt I could use it up to 25k miles.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    nothing but this
    By  jb,  a  Verified Buyer  from  Tucson, AZ  on  February 06, 2019
    I've used this oil in my vehicles for at least 10 years and they have performed as promised.....also haven't had any leaks from the engine ....wouldn't change!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best oil on the market
    By  Trump2020,  a  Verified Buyer  from  New Mexico, USA  on  February 06, 2019
    This is by far, the best product on the market.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Engine started when -34F
    By  Jake,  a  Verified Buyer  from  Iowa  on  February 05, 2019
    My 16.5 year old truck still started in the cold Iowa winter when plenty of other vehicles even newer ones wouldn't. Have to give credit to good synthetic oil.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    100% trust in all Amsoil products
    By  Chris,  a  Verified Buyer  from  Mooretown Ontario  on  February 05, 2019
    Every oil change gets Amsoil
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best money can buy.
    By  Jaymoe67,  a  Verified Buyer  from  Michigan  on  February 04, 2019
    Extended drain intervals, combined with my bypass filter, I'd drive this thing to the moon if I could figure out how to get it off the ground!!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Good fuel mileage
    By  Healey,  a  Verified Buyer  from  Colorado  on  February 02, 2019
    Good cold weather starts
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Feel the power
    By  Whzone,  a  Verified Buyer  from  Chandler as  on  February 01, 2019
    made a grate difference engine is quiet with a 10% better on gas can't wait for my next oil change
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    10-Oct
    By  Travis,  a  Verified Buyer  from  NC  on  January 31, 2019
    07 FJ cruiser with 150k miles, as soon as I dropped this stuff in, lifter rattle was gone
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Yes I would buy this product again and again
    By  Thomas,  a  Verified Buyer  from  Edmonton alberta  on  January 31, 2019
    I've used this product on my 2014 Jeep Wrangler, I love this oil been using it awhile with no issues what ever
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 4 star rating
    Good for me
    By  Rosopower,  a  Verified Buyer  from  Rawdon canada  on  January 31, 2019
    Hard To start very cold day
    Was this review helpful?
  • 5 star rating
    Oil lubrication
    By  Cliff,  a  Verified Buyer  from  Decorah, Iowa  on  January 30, 2019
    I use Amsoil oil, and fluids in all of my seven vehicles, from bumper to bumper, witch has cut way down on repair, down time and oil consumption..
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    100% synthetic all the way
    By  L. Barr,  a  Verified Buyer  from  Bakersfield cal  on  January 28, 2019
    Best form of lubrication for any automobile in my opinion.
    Was this review helpful?
  • 5 star rating
    The only oil I trust
    By  Chris,  a  Verified Buyer  from  Fort Lauderdale, Florida  on  January 28, 2019
    I use this in my Ram Rebel 1500 and it keeps the truck running smooth.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?