Customer Ratings & Reviews

1995.dodge.2500.12.valve.5/9.cummings.diesel.only.500.miles.since.change.have.notice.better.fuel.efficiency

Works perfectly

Greetings, I have a 2001 Hummer H1 and I recently 'rescued' a 1995 Hummer H1. Now, both of these vehicles are getting closer to the Classic status. I am bringing the 1995 back to life. I have changed the diff oil, hub oil, engine oil, trans oil, and coolant with Amsoil. The 1995 is running strong now. I take the vehicles out in the wilderness. I see no reason to risk my family getting stranded by using a cheap/sub-standard product. Adventure on!

I've been using Amsoil 15W-40 Heavy-duty Diesel and marine oil in my 2006 Silverado 2500HD for 10 years now. Oil and filter change intervals average around 12,000 to 18,000 miles. The truck now has over 355,000 miles on it and it still runs great! I never have to add any oil between oil changes either. If you are on the fence about using this oil in your vehicle, I say, go for it! You won't regret it! Amsoil is top of the line!

I have an 06 Dodge with the Cummins. These 'older' diesels required a CI4+ oil. There is much debate in the oil world about the qualities of the newer oils vs the older ones - specifically that the old CI4+ oils had more detergents in them, which the older engines liked better. Even though the newer oils are backwards compatible, they apparently do not have the same detergents in them. This has been the only CI4+ rated oil I can still find. Its the only oil I use in the Cummins.

Used this oil for 27 years and never had a oil leak or any engine failure. Put 300,000 miles on Dodge TURBO Cummins, check but never had to adjust valves. Only oil I will use.

I also use the motorcycle kit for oil and filter changes in my Harley Davidson

When I first heard about Amsoil I was really surprised by the quality of ALL of Amsoil's products. Amsoil strives to produce the best product for the most efficiency, longevity, and power from any engine. My first oil change using Amsoil after I started up my truck and got all the new oil moving around I noticed my 260,000 mile 6.0 Powerstroke ran smoother and I can rely on Amsoil to keep my old ford running like new for years to come. All I use is Amsoil in all of my vehicles.

I have 234000 miles using this oil,and My engine performs as good today as it did when new.

I have a 2005 Dodge 3500 with a 5.9L diesel. From the first time I changed the oil or had it changed, I have been using Amsoil 5w-30 with the Amsoil Filter. The truck now has over 435,000 miles and just keeps going! I do a lot of Freeway driving all across the West, sometimes pulling a stock trailer. Amsoil products keeps it going. I average about 25-28 MPG, and do about 35K-40K miles per year. Thanks for keeping me on the road!

I buy Amsoil since I want to protect the investment of at least a years pay in my SUV. It's one less thing to worry about and this oil has not let me down.

I rely on information that I get from Amsoil and write ups on engine oil that I find in magazines and on the internet as well as word of mouth. I've been very satisfied with the oil.

I use this product in my '79 Mercedes diesel. In cold starts it can not be beat. It holds up well for extended drain intervals and keeps old diesel running smooth and clean. For an old diesel(pre 2007) there is nothing that matches it.

I am almost at 200K on my Ford 2002 Super Duty Truck and hope to go to 300K + miles. Very happy with Amsoil quality and prompt service/shipping. I have ventured out and used other related diesel products in my truck with great success as well. Thx for providing a great product.

I have been using Amsoil heavy duty diesel and marine oil for the past 12 years in my 2004 GMC Duramax 2500HD truck. I have pulled a trailer all over this county and the engine has 360,000 and running strong. For what you pay for a truck, it's worth using the best lubricates out there to get the most mileage.

I've run Amsoil products for a combined 750,000 miles between my vehicles. Never had a breakdown from a related issue. Nothing but the best

I have been an Amsoil customer for almost twenty years. I use Amsoils in all my vehicles and am totallt satisfied with the performance.

I have used only Amsoil 15-40 Heavy Duty Motor Oil in my service pickup since it was new. It has over 509,000 miles with out any motor repair and I lost all my oil twice when some external oil lines broke but Amsoil saved my engine.

I've been running the 15w-40 Heavy Duty Diesel and Marine Oil for years in all my work trucks. I've owned 3 7.3 psd Fords, and a 2008 with the 6.4. Though this oil is not recommended for the 08, it has been deleted and does just fine in it. (if your truck is not deleted, use the recommended oil) I use Amsoil oil filters and do extended oil changes. 15,000 miles on all the trucks. Though I don't do oil samples on every oil change, whenever I have, they always come back good. In fact, I could probably go to 20,000 miles if I want to.

Love all amsoil product from racing jet skis to now running it in my 41 foot boat.