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Customer Ratings & Reviews

Series 3000 5W-30 Synthetic Heavy Duty Diesel Oil

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4.9 star rating Read 247 reviews

Customer Rating

4.9

81% would recommend

  • 5 234
  • 4 11
  • 3 2
  • 2 0
  • 1 0

Series 3000 5W-30 Synthetic Heavy Duty Diesel Oil

4.9 star rating Based on 247 reviews
  • 5 star rating
    Great product been using for many years!
    By  Cummins lover,  a  Verified Buyer  from  South Texas  on  March 19, 2019
    I've been using Amsoil diesel and marine for many years I drive 200 miles a day in my Cummins in and out of petroleum refineries 6 to 7 days a week and I work my truck hard! Amsoil has never let me down! This is a great product
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great product
    By  Jeff,  a  Verified Buyer  from  Woolford, MD  on  March 11, 2019
    I have been using Amsoil in my 2003 Chevy Duramax for its entire life with great results.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great oil for boat
    By  Charles,  a  Verified Buyer  from  Richmomd, VA  on  February 13, 2019
    This 15w-40 Marine oil is all I use in both my 2001 300hp Mercruiser boat engines since 2011. Why you might ask? 1) Only oil that has shown to lubricate the turbo blades on my son's boat diesel super-charger. 2) When son's oil hose ruptured at full engine speed, repair mechanic stated that engine only survived due to the oil's lubrication properties.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    I would purchase this product again
    By  Kerry,  a  Verified Buyer  from  TEXAS  on  February 12, 2019
    We have been using this product in our 2004.5 Dodge diesel since 2010. The truck had 110K miles on it when we switched over and added the micro-filtration unit. We now have some 329K miles with about 120K miles of that amount while hauling commercial freight. Now back to my daily driver and still using this oil.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Awesome Oil!!!!!
    By  Chum,  a  Verified Buyer  from  Grand Junction,CO.  on  February 06, 2019
    Product is great. 8-10,000 miles between oil changes. Price is right. You might as well go with the best.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    I will always use Amsoil
    By  Matt,  a  Verified Buyer  from  INDIANA  on  February 01, 2019
    It helps my 7.3 powerstroke start better since the injectors are oil fired it will start when 0 degrees without being plugged in
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great Oil
    By  Flyoften,  a  Verified Buyer  from  Fort Worth  on  January 27, 2019
    Oil is like a lot of things where the positive traits are hard to quantify. You just have to know it's good and working. I run it in a Ford 6.0 so it has to be good.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    I WOULD BUY THIS PRODUCT AGAIN AND AGAIN
    By  LEXUSMAN,  a  Verified Buyer  from  CHICAGO, IL  on  January 23, 2019
    I'VE BEEN USING AMSOIL SINCE 2004 AND I JUST LOVE THESE PRODUCTS. IN MY OPINION AMSOIL IS THE BEST OIL OUT THERE NOTHING COMES EVEN CLOSE. I HAVE A 2002 TOYOTA SIENNA WITH 570.000 MILES YES YOU SAW IT RIGHT 570K MILES AND THAT THING JUST KEEPS ON GOING AND GOING, IT JUST DOESN'T WANT TO QUIT. STILL ORIGINAL ENGINE AND TRANSMISSION. PEOPLE TOLD ME TO GET RID OF IT BUT I TELL THEM IT'S NOT THE TIME YET IT STILL RUNS LIKE A CHAMP AND EVERYTHING IS WORKING ON IT. I USE AMSOIL PRODUCTS ON MY OTHER CARS AS WELL AND A FEW OF MY FRIENDS GOT HOOKED ONCE THEY TRY IT AND THEY NEVER WENT BACK TO THE OIL THEY USED TO USE. THANK YOU AMSOIL FOR YOUR GREAT PRODUCT, KEEP UP THIS AWESOME WORK AND I WISH THAT AMSOIL TO BE AROUND FOR THE NEXT 100 YEARS. BEST WISHES AND GOD BLESS AMSOIL!!!! ISTVAN.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Truck&Tractor
    By  Donkey Boy,  a  Verified Buyer  from  Johnson City Tn.  on  January 22, 2019
    All we use in all our truck&tractor,
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great product
    By  Me,  a  Verified Buyer  from  Santa Rosa Ca  on  January 17, 2019
    I have been using this oil sense I bought my 07 Dodge Ram diesel new 12 years ago. I go 15k between oil changes. I'm glad I started using this Oil and the by-pass system when I did. I have 250k on my truck now and plan to go another 250k. Amsoil has been great every time I place an order as well.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    I use Amsoil in all my truck gear boxes and diffs
    By  Crowley,  a  Verified Buyer  from  Belgrade MT  on  January 12, 2019
    Have been using heavy duty diesel marine synthetic motor oil in my duramax work truck for last 70,000 miles. Seems to have superior protection and less breakdown under heavy loads and extreme conditions.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great dependable Lubrication
    By  Marv,  a  Verified Buyer  from  Virginia  on  January 04, 2019
    Motor oil
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    I use this oil all winter long
    By  M Grieshop,  a  Verified Buyer  from  Mendon Ohio  on  December 30, 2018
    I run this oil all winter long,every winter
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    7.3 diesel van
    By  Bigguns,  a  Verified Buyer  from  OHio  on  December 29, 2018
    I use this oil in my 7.3 liter van for the fact that it does great in the cold weather that I get into. I travel a lot in the northern states and it always turn over.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Excellent for my needs
    By  Steve,  a  Verified Buyer  from  Sask  on  December 26, 2018
    After taking professional training for oil analysis it occured to me this was a suitable option. I have a diesel truck that gets infrequent use and having a 14 tbn gives me comfort in fighting acidity while in storage.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 4 star rating
    Quieter 7.3 Hoping for excellent analysis
    By  ShovelJockey,  a  Verified Buyer  from  Nebraska  on  December 13, 2018
    I've got a strong running 7.3 with 292,000+ on the clock. Have been using another oil with excellent UOA reports and getting close to 10k on oil changes. Decided a while back it was time to see what this Marine Amsoil was all about. Immediately noticed my injectors were much, much quieter. Will be sending a sample in for testing in about 2000 miles and see how things compare.
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  • 5 star rating
    Love it!
    By  Reree,  a  Verified Buyer  from  Delmar De  on  November 21, 2018
    Does what it says it does, went from running my oil from 5,000 miles to 20,000 miles. Saves money and time , engine temp runs cooler when under a heavy tow going up a grade, oil doesn't smell burnt when doing a change easier start up in cold whether with not having the truck plugged in. Extremely satisfied with this product!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Yes
    By  Eric,  a  Verified Buyer  from  St Colomban Canada  on  November 20, 2018
    I change oil every 15k and I think is still good. 350 ml Bluetec
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  • 4 star rating
    Happy with products
    By  Marmon,  a  Verified Buyer  from  Usa  on  November 18, 2018
    Has improved the performance , better fuel economy ,easier starting saves money from not having to change oil.I also use cetane boost and injector cleaner
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  • 5 star rating
    I would buy this product again.
    By  speedy,  a  Verified Buyer  from  Crooked River  on  October 29, 2018
    I feel that it is a superior product.
    Bottom Line
    Yes, I would recommend this to a friend.
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