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AMSOIL Signature Series 5W-30 100% Synthetic Max-Duty Diesel Oil

Product code : DHDQT-EA

4.9 star rating Read 1,550 reviews

Customer Rating

4.9

92% would recommend

  • 5 1485
  • 4 45
  • 3 9
  • 2 3
  • 1 8

AMSOIL Signature Series 5W-30 100% Synthetic Max-Duty Diesel Oil

4.9 star rating Based on 1,550 reviews
  • 5 star rating
    Great Products
    By  Greg,  a  Verified Buyer  from  Salisbury, NC  on  November 27, 2017
    The ONLY I will put in my '16 Ram 3500 Dorsal!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Best oil around
    By  The Butcher,  a  Verified Buyer  from  WI  on  November 27, 2017
    Love amsoil! Ships right to my door and is always quick to arrive. It's all that's been run in my Cummins since it had 60,000. I am at 280,000 and counting. Amsoil speaks for itself!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    This is the best diesel oil out there.
    By  Steve,  a  Verified Buyer  from  Boston, MA  on  November 09, 2017
    Excellent at every point.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great product
    By  The real noble,  a  Verified Buyer  from  Cold lake, AB  on  November 08, 2017
    Use Amsoil synthetics with bypass filtration in my 2012 Ram 3500 Cummims. Oil analysis has got me over 20,000 kms between oil changes. Highly recommended
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    7.3L Diesel vs cold weather
    By  Bill,  a  Verified Buyer  from  North Eastern Ohio  on  November 04, 2017
    In addition to long interval oil changes my oil has to get me through all four seasons especially the cold North Eastern winters. I've tried many brands of oil and Amsoil Signature Series has proven to be the best. Cold starts no longer an issue if I forget to plug in my truck overnight or just leave it off for a shift at work. I really like this oil and trust Amsoil products.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    This product is great.
    By  Spike,  a  Verified Buyer  from  Poway, CA  on  November 04, 2017
    Since using Signature Series Amsoil in my F350 7.3 my truck is quieter and my mileage has increased. This oil is a miracle, I've been working on vehicles for over 40 years and this product has given me the best results of any lubricant ever.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Only Use AMSOIL Products
    By  Bob the Old Engineer,  a  Verified Buyer  from  Naples,FL  on  October 30, 2017
    Used the diesel oil in my bosses 2004 Chevy 3/4 ton 2500 PU,After this demo,will use in all equipment
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    I will continue to use each time
    By  Terry,  a  Verified Buyer  from  AZ  on  October 25, 2017
    Great product, will use each time I change oil
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  • 5 star rating
    Great product!
    By  Ron,  a  Verified Buyer  from  AZ  on  October 21, 2017
    I've been using Amsoil for 15 years now. Diesels, and family's automobiles, utvs, boats, and more. I know i can trust Amsoil, and have extended the life of all my equipment. Great oil, filters, and much more.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    I've always used Amsoil products in my 2007 Dodge
    By  Ray,  a  Verified Buyer  from  Anacortes, WA  on  October 21, 2017
    Always change my oil every 6 months. I have only 65K and mainly tow a 30 foot trailer in the summer months. I use Amsoil, engine oil, transmission fluid, differential oil, and filters. Great products.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great product and pricing
    By  Tattooedguy,  a  Verified Buyer  from  Sherwood park ab  on  October 21, 2017
    Amsoil is a great product, great service, I use there products in my 2016 dodge diesel
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil Synthetic Diesel Engine Oil
    By  Dusty,  a  Verified Buyer  from  Albuquerque  on  October 21, 2017
    Best diesel oil on the market. Wouldn't be caught using anything else. Read the specs.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Repeat customer
    By  Willie,  a  Verified Buyer  from  Las Vegas  on  October 21, 2017
    I've used this oil for a while now and all I can say is I love it. My truck runs smoother and doesn't burn oil when I'm pulling.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    I purchase this oil for every chance
    By  Blake,  a  Verified Buyer  from  Metamora, MI  on  October 15, 2017
    I purchase this oil for the soot contamination, fuel economy gains and the wear additive package. I can tell my Duramax doesn't "tick" anymore and the fuel economy is much better. I can also go longer between changes. All in all a great product.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Will use again and again
    By  Fordfan,  a  Verified Buyer  from  Valatie New York  on  October 11, 2017
    excellent
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil 5w 50
    By  Cooory Ed,  a  Verified Buyer  from  Thurman Ohio  on  October 05, 2017
    Great oil I run amsoil in everything
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Moving all my vehicles over to 100% synthetic
    By  Muleboy,  a  Verified Buyer  from  South Texas  on  October 01, 2017
    Swapped my Duramax diesel over to this oil. I want this vehicle to last for years so I am going to use the best oil I can. I plan on doing oil analysis as well to get the most out of this product.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    One of the best products for a diesel on the market
    By  Denali 16,  a  Verified Buyer  from  Cedar park tx  on  September 30, 2017
    Can't be more happy with the oil I've been running it for almost 10 years your missing out on the quality of this oil if your not using it
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great product!
    By  Nate,  a  Verified Buyer  from  Ohio  on  September 20, 2017
    Engine runs quiter and seem to get better fuel mileage. Very happy with the oil product.
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  • 5 star rating
    Diesel oil
    By  Chris,  a  Verified Buyer  from  Everett wa  on  September 15, 2017
    I like this oil in my 99 ford power stroke. Holds up well.
    Bottom Line
    Yes, I would recommend this to a friend.
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