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Discussion Starter · #1 ·
I would like to ask you a question, in all your years of experience, has anyone ever defined for you the meaning of "Diesel Fuel Lubricity"? Beyond just the words? I have looked high and low and from here to there for even a technical definition by anybody and I have found nothing.
















Or put another way. Outside of the ultra-low sulfur diesel fuel excuse. Do you know what causes diesel fuel to have poor lubricity? What is causal mechanism in the fuel that is causing the diesel fuel poor lubricity problem?






Thank you for your time


Kindest Regards

Mike Colburn

Las Vegas, NV
 

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Without trying to lean further into the low-sulfur thing, I do think it is just that. Sulfur was the thing providing lubricity then we went and removed most of it making diesel worse at protecting your system. Lubricant is added to modern diesel, but often not enough to meet the recommendation of the people actually manufacturing the engines- at least in the U.S. This blog goes a bit more into it - Does diesel fuel contain enough lubrication for your engine?
 
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