I recently updated one of my 359’s with a C-15 motor. I removed the original 3406b, and replaced it with a C-15 6NZ. In my B motor I always ran lubricant in the fuel to compensate for the lost lubricant in today’s fuel compared to the fuel refined back in 1985. Is this something I should continue to do with the newer style motor? I was planning on only using a fraction of what I used to put in the fuel, does this seem correct? I understand fuel supplements are a controversial issue, with that being said, the 3406b turned a hair over 3 million miles before coming out. Is the C-15 a motor that likes a small amount of lubricant for injectors?
Cat C-15 fuel question
Discussion in 'Trucks [ Eighteen Wheelers ]' started by Largecar359, May 15, 2021.
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I think everything can benefit from a little additive. This fuel is so dry, adding some lubrication is good.
My john deere dealer strongly recommends all its customers to run something in all their equipmentCoffey Thanks this. -
Well that is my thinking, diesel fuel today is far too dry and almost evaporates when rubbing it with your fingers. I remember when you would have to watch your step on the fuel rack bc if you got diesel on your shoes it was a major hassle to get it off. Don’t seem to have that issue anymore.
I just wanted to ask some guys/gals that have the C-15 what they have been doing. -
I have a E-model and dump a gallon of two stroke to 300 gal when I can remember to do it. I wouldn’t try it with these new motors and the stupid high fuel psi.
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Count me in the skeptical category. I never ran any fuel additives through the MBN C-15 my other truck had. The odometer showed over 1,500,000 miles when I got rid of it and more half of them were mine. No fuel related problems ever.
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