Is there an official ratio for how much additive to put in jet-A ?  I want to run jet fuel in my 06 DODGE RAM 5.9, but am woried about destroying the lift pump.

Jet A fuel is really kerosene and is not as refined as gasoline and we are not sure why you would want to use this in your Dodge Ram.  When adding any fuel additive, follow the recommendation on the label.  Most fuel additives treat 10 to 15 gallons of gasoline.  For Marvel Mystery Oil, we normally recommend using 4 ounces of Marvel Mystery Oil for each 10 gallons fo gasoline.  Since you want to use a lower quality fuel, we would up that recommendation to 6 ounces for every 10 gallons of fuel.

I can get discarded jet fuel free, thats why I wan’t to use it. I just don’t want to screw up my lift pump due to the jet fuel having much less lubricating propertied.