Look Up A VehicleSignature Series Max-Duty Synthetic Diesel Oil 5W-40
Product code : DEOQT-EA
85% would recommend
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Customer Ratings & Reviews
Signature Series Max-Duty Synthetic Diesel Oil 5W-40
Based on 598 reviews-
Best of the bestYou cannot get better oil.Bottom LineYes, I would recommend this to a friend.
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Diesel tractorThis is only oil I have used in my cub cadet tractor since purchased in 2000.Bottom LineYes, I would recommend this to a friend.
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Great productAbsolutely a great product highly recommended productBottom LineYes, I would recommend this to a friend.
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DuramaxExtended change intervals and lessens oil consumptionBottom LineYes, I would recommend this to a friend.
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The absolute best!2nd to none!Bottom LineYes, I would recommend this to a friend.
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Great oilI have a 06 duramax and my truck runs great on Amsoil.Bottom LineYes, I would recommend this to a friend.
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Great productGreat product, no issues.Bottom LineYes, I would recommend this to a friend.
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The ONLY oil I use!I have a 2008 LMM and used to use T6 (if you are looking at this oil, you should know what that is) cause my grandfather used it in his diesels. Found this, started using it. Everything noticeably smoother. Quick delivery and got a good discount program. Oh, and I get stickers too. HahaBottom LineYes, I would recommend this to a friend.
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Reliable and quick deliveryBeen using Amsoil for many years knowing the performance of their many products, I will continue to be a loyal customer.Bottom LineYes, I would recommend this to a friend.
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DuramaxLove this for my duramax.Bottom LineYes, I would recommend this to a friend.
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Good qualityI’m Very happy with this product. My truck is happy too 6.7 cumminsBottom LineYes, I would recommend this to a friend.
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Best oilBeen using this oil for over 30 years.Bottom LineYes, I would recommend this to a friend.
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Diesel oilIn my opinion this is a good oil to run in a Cummins Diesel engine good cleaning propertiesBottom LineYes, I would recommend this to a friend.
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Diesel reviewGreat service and fast delivery and my truck runs much better on AmsoilBottom LineYes, I would recommend this to a friend.
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Heavy duty engine oilBest engine oil ever. Keep the motor clean . Clean means also long life for the engineBottom LineYes, I would recommend this to a friend.
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Best of the bestI use all of Amzoil products in every thing I own, I just had the oil changed in my truck by the dealership because I have to do to warranty contract, drove for a week and changed it with my Amzoil, noticeably quieter (Deisel). I paid almost 80 grand for the truck I want the best oil for it.Bottom LineYes, I would recommend this to a friend.
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Signature Series Max-Duty Synthetic Diesel Oil 15W-402015 GMC Denali will always use the highest grade oil I can for this vehicle
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Great productStarted using this in my 2004 ram 2500 Cummins and is doing a great job protecting the internal parts of the engineBottom LineYes, I would recommend this to a friend.
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Good qualityI recommend 100%Bottom LineYes, I would recommend this to a friend.
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Excellent/Best Diesel oil on the Market.Signature Series Max Duty Diesel is absolutely the best oil on the Market. After several years of use I have no problems with my fleet and save $ with longer drain intervals.Bottom LineYes, I would recommend this to a friend.