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 6,863 reviews

Customer Rating

5

90% would recommend

  • 5 6679
  • 4 130
  • 3 24
  • 2 9
  • 1 21

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

5 star rating Based on 6,863 reviews
  • 5 star rating
    Really good oil
    By  ERIC,  a  Verified Buyer  on  February 15, 2024
    I like this brand of oil and I love the fact that I can go longer on an oil change than the standard oil I was buying.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Amsoil products
    By  BRUCE,  a  Verified Buyer  on  February 15, 2024
    I’ve been using Amsoil products for over 20 years and have never been disappointed with their products 5 stars!!!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Awesome oil
    By  JOHN,  a  Verified Buyer  on  February 15, 2024
    Sound product
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 1 star rating
    No Issue with the product, issue is with customer service
    By  ANTHONY,  a  Verified Buyer  from  New Jersey  on  February 12, 2024
    Ordered a case of Oil and qualifies for the promotional products at the time were 2 fast funnels and shops rags if you spend over $100. Promo code for this wasn’t working so I called and asked if they could send the promo items with my order and they said that they couldn’t. Upset I didnt get my free shops towels and fast funnels. Oils is great though just annoyed they couldn’t honor thier promotions.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    The best oil you can buy.
    By  BRIAN,  a  Verified Buyer  on  February 11, 2024
    Amsoil is the best protection you can give your cars engine.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    The best motor oil. Period
    By  ZANE,  a  Verified Buyer  on  February 11, 2024
    Exceptional performance. My car runs nearly silent and hardly consumes any oil at all with this oil. You also save money with the extended drain interval. Will also clean the inside of an engine like nobodys business. No other oil even comes close to the signature series.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    New or old vehicle, the standard for a reason
    By  CMG,  a  Verified Buyer  from  Charleston, SC  on  February 10, 2024
    Given decades of using Amsoil in many used vehicles with high mileage (BMW 320, Audi 4000S, Nissan 240, Grand Marquis, Chevy Trailblazer, Mazda MPV, Dodge Durango), I changed my wife's new car to Amsoil almost immediately. Those well-worn vehicles never required engine work in my care. I suppose this new Subaru motor might be one of the last combustion engines running when it all goes electric. I don't write reviews as a rule. If someone reads this and wonders if the oil is worth the price and the added steps of ordering through the mail... I am unsure what further testimonial you might need. Worth every penny, new or old vehicle.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    The standard for a reason
    By  CMG,  a  Verified Buyer  from  Charleston, SC  on  February 10, 2024
    Perhaps ironic to many, my truck-- which has its oil changed with Amsoil every June-- was bought out of an auction lot over 10 years ago. Previous vehicles were, too, including BMW 320, Audi 4000S, Nissan 240, Grand Marquis, Chevy Trailblazer, Mazda MPV. Despite older vehicles considered finished by their owners, I would get trouble free years out of them. My current Dodge Durango began life as a rental, so I do not know what the first 60,000mi were like, but the next owner had four different tires on it by the time I purchased it. 125000mi later in my care, the engine has never been rebuilt, never leaked, never burned oil. No surprise that I changed my wife's new car to Amzoil almost immediately. I suppose that Subaru motor might be one of the last combustion engines running when it all goes electric. I don't write reviews as a rule. But if someone reads this and wonders if the oil is worth the price and the added steps of ordering through the mail... I am unsure what further testimonial you might need. Worth every penny, new or old vehicle.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Amsoil 5/30 signature 100% synthetic oil
    By  JIM,  a  Verified Buyer  from  Washington  on  February 10, 2024
    I have been using this synthetic oil for years in all my vehicles-I recommend it! Is great for my new colorado with turbo charged engine also.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Amsoil 0w-20 synthetic motor oil
    By  JIM,  a  Verified Buyer  from  Washington  on  February 10, 2024
    Use this in our chevy equinox since new-Great all around protection,especially for turbo charged engines.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 3 star rating
    Works great just not from my vehicle
    By  STEVEN,  a  Verified Buyer  from  Massachusetts   on  February 10, 2024
    I a 2012 Acura TL, and they are known for their oil consumption failure issue and even though I use this oil it’s still doesn’t seem to help much but I try
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Only the best
    By  MICHAEL,  a  Verified Buyer  from  High Point, NC  on  February 10, 2024
    I've always used Mobil 1 and have nothing bad to say about them. I purchased a Jeep and have a job that requires me to drive 180 miles round trip. I've heard about AMSOIL for years and never tried it. Now was the time. I ALWAYS buy the best for my vehicles since it's what gets me to and from work to earn what pays my bills. Here we are and I cannot say anything bad about AMSOIL. Yes, it's more expensive and I cannot say whether it's better than MOBIL 1, but I have the piece of mind that I have the protection I need for repeat, long distance driving. AMSOIL's data says a lot and in detail. Another selling point for me. Buy it not. Take my word or not. Whatever you're putting lubricating products into, you spent hard-earned money on to buy. Why not put the best money can buy into it? No-brainer to me.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    LOVE THIS OIL.
    By  MICHAEL,  a  Verified Buyer  on  February 09, 2024
    I USE AMSOIL IN ALL MY MOTORS!!!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Works for me
    By  GREG L,  a  Verified Buyer  from  Colorado  on  February 08, 2024
    I have never had a problem in 20 years getting the product shipped to me in time to change the oil in my vehicles and it consistently over performs. Thank you!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Continuing Performance
    By  Ravenforbidden ,  a  Verified Buyer  from  Bremerton, WA  on  February 07, 2024
    Used on a friend's 2018 Impreza WRX and the wife's 16 CX-9 both of which had notable smoothness improvements and better spool response. Oil has worked as a detergent as well, since use the car has needed less encouraging to accelerate or run in winter.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    0-20WT synthetic oil
    By  ALAN,  a  Verified Buyer  from  Northwest  on  February 06, 2024
    I use this oil in our Honda and Toyota. It holds up very well with high mileage. I don’t use anything else.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Keeps on going
    By  WILLIAM,  a  Verified Buyer  from  NJ  on  February 06, 2024
    Always use Amsoil motor oils, transmission products, filters and fuel products. Current vehicle at 292k miles, previous vehicle sold at 297k and I understand that it went past 350k. I intend to use their products until I hit 2 million miles myself.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    always great
    By  MATT,  a  Verified Buyer  from  Missouri  on  February 05, 2024
    I actually was told about Amsoil by a friend, one of those nut cases that does too much research into everything. I have an older truck, that I want to take care of so I try to feed it the best stuff I can. Amazon works great, their website is easy, their shipping is fast, their customer service is top-notch.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Stays Clean
    By  DON,  a  Verified Buyer  on  February 05, 2024
    This oil stays cleaner longer and the oil itself doesn't break down. I run the Signature series 0 w 20 oil and the EA Filter. I drain and fill every 15K miles
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Good quality
    By  TOMMY,  a  Verified Buyer  on  February 05, 2024
    This oil does what it says highly recommend this oil to anyone
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?