hey GOAT! just adding my two cents worth have a 98 and a 96 12 valve diesel trucks and luv them both. work on all of the dodge trucks regularly and hardly ever see a problem with the 12 valve motors. even with the new fuel i have not seen a problem . in the 12 valve injection pump almost all of the pump is lubed by the engine oil from the govenor to the cam driven plungers for fuel delivery. only place fuel plays a factor is in the barrel of the plunger where the fuel is delivered and the pump yes does rely on fuel for lube but if you read about the new fuel it is government requirement to add a lube type additive to the fuel to make up for this. and yes if your pump is already giving you fits on the old fuel the new fuel will probably do it in but have not replaced a bosch pump for this totally different with the vp44 pump which is totally lubed and cooled by fuel not a good idea and that is used on the 24 valve. and as far as additive in the fuel i usually run a blended fuel of 60/40 in the winter months here and have never had it gel have seen quite a few pickups pulled in here with #2 and additives and gelled so i honestly am not a big beliver in #2 with additive below the 10 degree mark. mileage may be lessened by using blended or #1 fuel but your economy will be great when you are being towed to the nearest shop. just my opinion. and i would have to say never use methyl in the trucks fuel system being it is a very harsh and dry additive even if you use a additive for lube qualities when they set around they settle out and straight methyl will ruin a pump in no time at all. let me know if you would like to ask anything else willing to give my opinion (if it truely matters)which i hope is a good one.

 

12 Valveman

Thanks for the input, sure appreciate it. When I mentioned the Methyl I was refering to the old Detroit 318. In winter weather weather when I set out I used a mix of Auto Trans Fluid and some Methyl for good measure. I have sat on the side of the road a couple of times because of the cross over return line freezing up, and when its -10 to -20 degree weather you have a tendency to be a little cautious. After that couple of times it never happened again.
Enough of the old tales, although true. So when you say 2 stroke, are you talking like chainsaw oil, if so how much, and how often?

 

unless the 24 valve is a HPCR engine(03 to current) it will ahve some issues with the injection pump. the 12 valves have proven to be very reliable and you ca turn the power up for nearly nothing.


with the way the injector pump of the 12 valve runs, 2-stroke oil realy isnt needed. it is more needed for the 24 valve engines since the injector pumps are lubed by the feul itself especialy the 98.5-02 VP44 driven trucks. The 03-07.4 HPCR(High Pressure Common Rail) trucks were designed to run the ultra low sulfur diesel fuel, however I have found myself that if I dont run a little something(PS 2 stroke mix) my engine runs just rough enough to be annoying.

if anything in cold weather running some power service in the white bottle is all that would realy be needed since it has anti-gell properties.

 

Drew
As you can see by my questions here, on the fuel additives, like PS, etc. Is this once again the 2 cycle oil that you are refering to?
I get the drift of the Anti-Gel additive, and what its purpose is, and also the oil additive.
My question is how much and how often? Not trying to be a pain here with the questions, but as you can probably tell I am new to this current Diesel Fuel. Its as everyone is saying not like the old and better kind that I was used to. Thanks again for the replies, just trying to absorb all these formulas.

 

PS is short for Power Service, commonly found at truck stops(Pilot,Flyin J) also available at wal-mart. Next to the Marvel Oil and other additives.