hey i was just wondering if anyone knows if you can run red diesel in a 2003 cummins. i have heard that it will mess the truck up if you run it but the other day i was talking to someone with a 2005 cummins and he said that he runs it. i also heard that it makes it smoke more. is this true. thanks alot

hey i was just wondering if anyone knows if you can run red diesel in a 2003 cummins. i have heard that it will mess the truck up if you run it but the other day i was talking to someone with a 2005 cummins and he said that he runs it. i also heard that it makes it smoke more. is this true. thanks alot

Around here it is all the same they just put the red in it to show no tax paid on it. Its for offroad or boats only. It will run fine and do the same as what you have.
I would not run no tax Diesel, it can get you in some heat with DOT or DMV.
Also around here if Dodge dealer finds red fuel you may be on you own for warrenty and turn you in for the taxes.
In some cases like storms they sell anything they can find and tell you to keep the paper they give you to show taxes paid on red fuel.
Jon

Yeah they questioned me when I took my truck in for some warranty work. I had been running diesel fuel from the farm in it. Oops [nonono] Anyway dodge dealership told me it would probably take 20000 miles to get all of the red dye out of my fuel system and told me not to run it because if cummins finds traces of the dye when you have warranty work done they will void your entire warranty. Around here though everyone uses it, its the same as onroad diesel, they just put red dye in it. I did have someone tell me not to run high sulfur off-road diesel in the new trucks because it is hard on the common rail fuel system. Seems like high sulfur to me would be better because of the higher lubricity of the fuel. Anyway with fuel prices the way they are now, as soon as I am out of warranty my truck becomes an off road vehicle again

All you're doing is cheating the state and feds outta money they so richly deserve. I run "red" because I'm allowed to...in the tractors and the 95 in sig. The 95 fuels the others in the field and it doesn't go on a public highway.

Running red also cheats the rest of us tax-paying citizens out of money too, which isn't fair. Our tax money, or at least some of it, goes to fixing/maintaining the roads/highways..and for all you cheaters using red, we're floating the bill for you...thanks a lot.

The RED fuel topic has been done to death. [yuk]