Well i was messin around the other day mudding and my buddy had his truck over which is an identical clone to my own, a 94 F250, same paint, same style, same wheels and everything, except his is a Powerstroker. Well he put red diesel into my truck and only realized it when he saw my stickers instead of his own, it was like a gallon before he saw it. At first we thought my truck was screwed, that we would have to drain it all. Well we got a fire call and we responded individually to the scene and my truck hauled A**!! It didnt smoke at all either. Its like it gave it new life. The temps didnt go high and the fuel cosumption went down. Since this i gave her a tune up and i experimented with the block hot. I took off one then two then three and then four plug wires, getting shocked in the process, and my truck ran smooth! As far as i know, this should not be possible and my truck shouldve blown up. But its still running like a champ, even though it still shakes like hell when im at 40-50mph. Im thinkin thats either my TC or my harmonic balancer.

Any ideas on that yet? Torque Converter issue? Harmoic balancer? I checked it going down the road and when i started i kept on the gas and tapped the brake, it stopped immediately.

 

Dyed diesel is for non-road use, and is just an indication for either tax/no road tax status. I'm sure the red fuel is ok for your rig, just don't get caught sellin' it on the corner...As far as your other issue, check your drive-line balance/tires-rims, etc. Let us know.

 

I think what F250351W means (judging by his name) is that his buddy's truck is a diesel, where as his is a 351 gas. What I get is that your buddy put diesel into your gasoline truck, right? HrdDrv is right about the road diesel vs. farm diesel, but I think 1 gallon in the tank mixed with gasoline isn't going to cause serious harm. While it's not something I would recommend doing on a regular basis; I've heard that some people will put diesel into motors and fuel tanks before storing a vehicle because gasoline is slightly corrosive naturally where as diesel is actually an OK lubricant which protects against corrosion.

As far as taking off plug wires and running the engine without cylinders firing, I'm a bit confused. I wouldn't think it would be a good idea to purposely run an engine while trying to make certain cylinders misfire.

 

Yeah my truck is a gasser and his is a powerstroke

 

Diesel in a Gasser = not really good, but probably not catostrophic.
Gasoline in a diesel = meltdown.
Thats based on filling the tank completely, not a mixture. I have heard of guys running one gallon of diesel to a full tank of gas in their gassers, I have never done it, nor would I.
At least he didnt pump gasoline into his PStroke..........

 

A neighbor of mine down the road runs diesel thru his gasser a few times a year. A gallon or so in an other wise full tank. I'd think that if you completely fill the tank with fresh gas, the diesel will unaffect your system. But I'd fill the tank(s) to their maximum.
Good luck~
Roger

 

And there are those of us who mix gasoline in their diesel trucks, in winter when it gets real cold I usually put in 5 gallons of gas and then fill her up with another 15 gallons of diesel, she never ever gells up this way - not a big deal for most folks, but as far away from my base of operations as I often venture out I cannot afford to be plagued by fuel-related issues. I do have to add some lubricity chemicals to this fuel blend tho, or else the injection pump will hate me.

 

Many times we've gone to pick up new trucks from the dealership, Hop in and take off down the road and notice it running funny and a bunch smoke. Dang idiots at the dealership fill it up with gas. Turn right around and get a new truck.

 

I had a friend once put about 10 gals of diesel in my truck once. It ran but not good, as I put gas back in it ran better. No harm was done execpt had to replace the fuel filter. Diesel did clean the fuel system up really good and all told it did help make my engine run better after it was diluted down!

But gas in a Diesel engine, BOOOOM!! My Dad works for a major truck rental company and sometimes a nitwit will fill up a diesel truck with gas. Intresting what can happen. Heck the last time someone did that, he got about 120 gal of diesel/gas mix and we used it in our trucks!

 

running a bit of diesel in a gasser can be good once in a while...fill a gassers tanks with diesel and you got problems, running too much can basically F*** everything from your pump to your injectors if they will even ignite the stuff...diesel is heavier than gas and it is much harder to ignite, hense why diesels use compression to ignite it rather than spark plugs, theres no was a gasser will make the compression to do it and the injectors probably wont vaporize it enough for the spark plugs to ignite it either...but the poper mixture with gas and it can be very beneficial...i dont know if id do it all the time but i would cut down the consumption since diesel burns with 10 times the power of gas

anyone run mix on every fill up? im kind of curious about that, id like to reduce my fuel consumption any way possible LOL...11.4 MPG + 70KM round trip 5 times a week = $$$$$$$$$$$

but yes...gas in a diesel = BOOM!

 

deuces can run gasoline but you also have to put motor oil in the tank

 

Well yeah, my the older Ford IDIs can do it too, you essentially cut the oil with the gas to make the fuel thinner and easier to pump.

 

yeah but try running straight gas through a diesel hahaha...not gonna lie i want to just to say i did...expensive for 5 mins of fun though

 

Your question interested me, so I did a little looking. I found this site which is kinda cool:
Bioenergy Conversion Factors

It states "that the energy content (heating value) of petroleum products per unit mass is fairly constant, but their density differs significantly – hence the energy content of a liter, gallon, etc. varies between gasoline, diesel, kerosene."

So gasoline and diesel have about the same energy per pound, but when refering to volume, diesel has 13.5% more energy per gallon. If you ran 25% diesel, then you only have 3.4% more energy in your gas tank. Which isn't a whole lot.

diesel = 130,500 Btu/gallon
gasoline = 115,000 Btu/gallon

That being said, I kinda still want to try it.

 

Another good reference is:
Gasoline gallon equivalent - Wikipedia, the free encyclopedia

Something else to think about. If the computer measures the incoming air and decides how much fuel to add, and you are adding a fuel with a higher energy/volume ratio. Then wouldn't you be making your engine actually run overly rich?

EDIT: I guess while going by just the MAF might make it run rich, the O2 Sensor probably would allow the computer to lean out the mixture.