diesel guys

use some trans fulid every time you change your fuel filter...now i pour a hole qt in my filter it smokes just a little but it seems to me that it gets a little better fuel mil. and it runs clean and better...

just better hope you never get caught. at least your not putting it in the tank. then you would be screwed if DOT ever decided to check your fuel. since you are dying it red you are putting your self in jeopardy. that is a hell of a fine to pay for not even actually buying the real stuff. best advice is do what i do. if you are going to put the lubricant in your fuel.
use 1qt of outboard 2cyl boat oil. it is blue and no worries of the DOT doing a check on you. believe me I have been checked. took a load of cattle to the sale barn and they were setting there checking all trucks for weight, license and fuel samples. all this for only hauling a 26 ft trailer and 10 cows. i had no worries though. i was ok and new it.