6.7L Cummins Forum

If I knew how to post them I would but I now have two readings and I am confused. The first (15,000) was deemed normal but watch the fuel level 3%. This was done at 5000 mile interval. Blackstone said to try 6000 so I went to 5700 and change as it was the weekend and just got that report back. Fuel to 5% all else was good now try 6500. Yet in the same report they said that maybe I should have my dealer check it out. Is the fuel something we are just going to have to live with because of the regeneration process? The Truck runs great, no issues with mileage or anything. The increase in fuel dilution and add mileage to changes is just a bit confusing. Thanks for any and all help.
Patrick

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Hi Patrick, I know these trucks do have higher levels of fuel in the oil due to regeneration so the more city driving you do the higher the fuel level will be. The oil and filter are working great so that's why they suggested going to 6K but with these trucks and the Cummins 6.7L what may be the stopper when it comes to extended oil drains will be fuel level in the oil rather then the oil breaking down.

If you're not sure about the regenerations that had taken place I'd take a copy of your analysis in to the dealership and see what they say. At least if something happens to your engine down the road this will be on the record.

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2007.5 Dodge Ram 3500 HD,QC, 6.7L Cummins, 6speed Auto, 4X4, Bighorn Edition.
Click for installs: Carr Steps PML Diff Cover Edge Juice with Attitude Volant Intake Hankook ATM RF10

Just did my first oil analysis in 2 years. Switched to Amsoil and installed by-pass and this is what I received today! Pretty happy! I think I also Successfully attached the document too!

Patrick

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oil.pdf (1.60 MB, 9 views)

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2008 2WD 2500 QC Short Bed, 3.73, G56, PML Rear Diff Cover. Wheel to wheel 3" Nerf bars, AMSOIL Dual By-Pass AMSOIL In Crankcase, Tranny, and Differential

Looks Good! I'm going to install the Bypass in both this and the new truck since it looks like a heck of a good deal!

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2007.5 Dodge Ram 3500 HD,QC, 6.7L Cummins, 6speed Auto, 4X4, Bighorn Edition.
Click for installs: Carr Steps PML Diff Cover Edge Juice with Attitude Volant Intake Hankook ATM RF10

which by-pass? FS-2500, Amsoil or other? Much on there is still foreign to me but when I can get essentially double mileage out of the oil I'll take it?

Patrick

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2008 2WD 2500 QC Short Bed, 3.73, G56, PML Rear Diff Cover. Wheel to wheel 3" Nerf bars, AMSOIL Dual By-Pass AMSOIL In Crankcase, Tranny, and Differential

Now I'm interested in the oil analysis on my truck to check this fuel issue. What is the process and cost involved to recieve a report? Thanks.

Blackstone is $25 I think. More for a TBN test don't remember how much.
Here's their site and they will send you the kit free.
Blackstone Labs
Patrick

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2008 2WD 2500 QC Short Bed, 3.73, G56, PML Rear Diff Cover. Wheel to wheel 3" Nerf bars, AMSOIL Dual By-Pass AMSOIL In Crankcase, Tranny, and Differential