ULSD and additives

[91 NA]

I just lost my last source of non-ULSD fuel.
What will I need to add to the ULSD to keep the seals from shrinking?
I'm typically adding Diesel Kleen Power Service, MMO, and 60 wt oil on each fill up.
I recall reading that the aromatics had been reduced, and were the culprit in the shrinking / leaking seals.
Would any of these help, or should I be adding small amounts or regular gasoline (or somesuch) to sweeten it up?
Thanks in advance.
Mark
91 NA

[VWCaddy]

I've been running Stanadyne Performance Formula with good results. It was supposedly reformulated for the new low and ulta low sulphur diesel fuel. I mix the ~3 oz. of Stanadyne with enough 2-stroke motor oil to make a pint and add that to a tank full of diesel.

Could always try some of this stuff!

[idhoho]

Look at Hagars rantings on this topic. Paraffin, aviation oil, and perhaps other oddities from his past are all good to read about and nothing but fascinating. In a recent article shared here by somebody important it was stated that IP's that have gotten hot in the past are more likely to leak with the ULSD. Personally I use what you use with the exception of 2-cycle oil instead of the 60wt. An occasional dollop of Marvel Mystery Oil can't hurt anything either.

[A1-2-A3]

I run diesel in my car.. If the pump leaks, throw in a set of gaskets and such its going to leak someday soon if they are orignals. I personally think most add ins to the tank will do more harm then good. everyone has there snake oils they swear by. Each to his own.

[JRM]

I add 16oz of cheap wal-mart bar and chain 30w to each fillup, in the winter I add the correct ammount of anti gel and call it good. I also just found a large ammount of OLD 5,000PPM fuel hideing in my friends 1942 TD-14A dozer's tank, I removed the rust and water from the fuel via a home water filter and filled up my VW, wow did it KNOCK and I was also shocked at the smell, long lost memories brought back

[Op-Ivy]

I run diesel in my car.. If the pump leaks, throw in a set of gaskets and such its going to leak someday soon if they are orignals.

Agreed. I used additives before my seals went. It did help slow the leaks but eventually my pump was just overwhelmed

The best thing you can do is get it resealed.



Matt

[lyeinyoureye]

I don't think I would mix in gasoline. I recall reading somewhere that as little as 3% gasoline allows for the gas/diesel mixture to ignite at room temperature.

[82vdub]

I've added a small amount of gas years ago. I don't like to do it, but according to the VW manual in my glovebox, it says you can add up to (if I remember correctly) 2 gallons of fuel to a tank. That's a 20% concentration, which I think is excessive, but then again I don't live in Siberia and need the car to run when it's -40F

[Pu241]

I've added a small amount of gas years ago. I don't like to do it, but according to the VW manual in my glovebox, it says you can add up to (if I remember correctly) 2 gallons of fuel to a tank. That's a 20% concentration, which I think is excessive, but then again I don't live in Siberia and need the car to run when it's -40F

I agree, my GM 6.2L diesel manual says its ok to run upto 30% gasoline if needed.

Maybe diesels are more flexible about their flue than we thought.
Can you imagine adding 10% diesel to a gasoline engine, let alone 20% or 30%?

[JRM]

i put in 2 gallons of diesel in my 1990 toyota for a $20 bet with friends, just a little blue smoke on shifts is all that I got