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 6,912 reviews

Customer Rating

5

90% would recommend

  • 5 6728
  • 4 130
  • 3 24
  • 2 9
  • 1 21

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

5 star rating Based on 6,912 reviews
  • 5 star rating
    Love amsoil
    By  Lucky,  a  Verified Buyer  from  Oklahoma  on  August 23, 2016
    I use amsoil in everything I own bikes quads vehicles ect. I use this in my 2012 Silverado trucks seams to preform better with this rather than the mobile one I was using before
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 4 star rating
    I will continue to buy this product.
    By  Chuck,  a  Verified Buyer  from  Port Burwell, Ontario, Canada  on  August 23, 2016
    I have used this oil for several years with very satisfactory results. The only drawback is that it is priced in American dollars and starts to become expensive when the exchange rate widens.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    0W-20 synthetic
    By  Charlie,  a  Verified Buyer  from  Dorr, MI  on  August 23, 2016
    GOOD STUFF
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    100k plus miles
    By  Don,  a  Verified Buyer  from  Livonia, Michigan  on  August 23, 2016
    From it first oil change I have used Amsoil 5w20 and to this day runs like new. In fact all my engine run in Amsoil products. Very happy with the performance and durability it keeps giving.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Amsoil 5w30 Signature Series
    By  mttrsn1,  a  Verified Buyer  from  South Carolina  on  August 23, 2016
    This is the Staple in any engines life! Have been using this Amsoil product for 16 years now in many different vehicles. Use Amsoil products in all my equipment, SUV's, cars, lawn tractors and mowers, from the motor oil to the transmission fluid to gear lube/differential. Never have to worry about or even think about if you have the best protection possible. Engines run very clean, smoother, quieter, and noticeably better fuel mileage. Outstanding performance!!!!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Amsoil is superior.
    By  Mark,  a  Verified Buyer  from  New York and Arizona  on  August 23, 2016
    A number of years ago I learned that synthetic oil was superior to conventional oil. Shortly thereafter I tried amsoil and discovered that amsoil was superior to other synthetic oils. This became evident when I started traveling on 2250 mile trips on a fairly regular basis. Other synthetics needed a quart on the trip. Amsoil, none. I researched the issue and a competitor alleged that the difference was based upon Amsoil's use of too much of a certain additive and that that additive would ruin a catalytic converter. I have put over 150,000 miles on three different vehicles and none ever needed a catalytic converter or oxygen sensor.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Amsoil Is The Best!
    By  Satisfied,  a  Verified Buyer  from  Jackson, MS  on  August 23, 2016
    I've used Amsoil products now for about twelve years. After a year, the drain oil is not much darker than it was when it went in. I put about 1000 miles per month on my truck (2014 Xterra). Previously, I drove a 2001 4Runner similar miles.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Amzoil is # 1
    By  BK,  a  Verified Buyer  from  Uniondale, NY  on  August 23, 2016
    I've been using Amzoil products in all of my vehicles since 1988.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Amsoil Superior Quality
    By  Vladimir,  a  Verified Buyer  from  Georgia  on  August 23, 2016
    I come from the old school that good quality oil is always cheaper than rebuilds and parts replacement. I have been using Amsoil products for over 20 years and the results have been outstanding. They provide the best protection against wear keeping the powertrain in outstanding clean and excellent conditions for many, many trouble free miles.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Another Great Amsoil Product
    By  Kilted One,  a  Verified Buyer  from  Redding Area  on  August 23, 2016
    Our 2015 GMC requires GM spec oil which Amsoil more than meets. Being a bit old school on oil changes I like the margin of a high quality synthetic because modern engines are under much higher stresses and heat than when I started driving and wrenching.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Amsoil Signature Series Motor Oil
    By  Fuzz,  a  Verified Buyer  from  OH  on  August 23, 2016
    I have been using Amsoil synthetic oil since the 70's. This was at the recommendation of my father in law who was a professional master mechanic for a large public utility company. Amsoil synthetic oil and grease has been used in all of my vehicles over the last 40 years without any internal engine failures. Easy starting in below zero winter temperatures without any hammering or pounding noises. For clean and efficient engine performance there is nothing better than Amsoil synthetic products!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Anybody with a car, truck, cycle or boat needs Amzoil
    By  Mike,  a  Verified Buyer  from  Las Vegas, Nevada  on  August 23, 2016
    Been using Amsoil products on 3 service vehicles for a 20 year period and received 256K on my truck, 278K on my passenger car and 146K on my motorcycle. I know these products had a lot to do with those totals. Wouldn't use any other Brand EVER!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Been using for years
    By  Nick,  a  Verified Buyer  from  Ridgeville, SC  on  August 23, 2016
    My dad started using Amsoil in the 1980's and when I started driving in he mid 90's I started using it too. Never had any issues and I always beat on my vehicles. Excellent oil.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best oil as usual
    By  Ryan,  a  Verified Buyer  from  New Bern, NC  on  August 23, 2016
    Bought this product for my lawn mower. Was a great replacement to regular oil. Performs great. Experiencing easier starts and more quiet performance. Exactly what I was expecting from amsoil.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best oil for your vehicles
    By  Mxmantc87,  a  Verified Buyer  from  Hawaii  on  August 23, 2016
    I've used amsoil in all of my dirt bikes for 10 plus years every new top end build the engines have been spotless. I just recently started using amsoil in my vehicles and so far I'm blown away on how good the oil is even on changing its not black and thick like other oils I have used. I change my oil in my cars every 15 thousand miles with this oil it's good up till 25k but I just do it out of peace of mind. If you have never used amsoil I recommend you give it a shot. I'll never use any other oil in my vehicles or dirt bikes except amsoil ????
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    best oil going
    By  DJ cars my passion and hobby,  a  Verified Buyer  from  melbourne Florida  on  August 23, 2016
    use amsoil in my 2000 corvette (135,000 mi), 2002 325 bmw (140,000 mi) and my 1956 chevy 210 with a 355 stroker hardly any miles but really like the Z-rod oil. Been using amsoil for 8-10 years and to date no engine problems. will continue to use their product till I'm grounded from owning a vehicle.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best Product Ever
    By  Redman,  a  Verified Buyer  from  Navarre, Fl  on  August 23, 2016
    I've been using AMSOIL for going on three years and its nice knowing that my 12 year old truck wither 175,000 miles and is protected by the best synthetic oil on the market and continues to run great. Once a year old changes, with a mid year oil filter is easy maintenance. I recommend AMSOIL products to all the people I talk to who are being thrifty with their older vehicles. Compared to the costs of simple oil changes at a garage. AMSOIL products that I have tried have stood up to the advertising they offer, and its rare to get exactly what you read about these days.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best Synthetic Oil
    By  Jmlo96,  a  Verified Buyer  from  Pittsburgh, PA  on  August 23, 2016
    I run this oil in my turbocharged Chevy Cruze. It is clear in the numerous tests that Amsoil makes a superior oil. I was sold on Amsoil when I had a rough manual transmission shift, and the Amsoil fluid made it totally disappear.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Better than advertised
    By  Robb,  a  Verified Buyer  from  Lancaster, PA  on  August 23, 2016
    I have used Amsoil Signature since my vehicles were new. 2 of them have over 200,000 miles and the 3rd has over a 100,000. I have shortened drain ontervals to 12,000 miles and leak no oil in-between changes.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Easy on line purchase, picked up at warehouse.
    By  One time Tommy,  a  Verified Buyer  from  Orlando, Florida  on  August 23, 2016
    Use it in my 2010 Prius, once a year oil change.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?