I was filling up my '82 300 TDT yesterday and the tanker driver was
filling up the station I was at at the same time.
I went over and asked him if he knew if the Ultra Low Sulfur diesel
made cars harder to start. He said it did and that the company gives
them bulletins about it and how to get their trucks to start and
precautions they have to take so they don't get stranded when they
deliver to cold places.
I told him that he was the first oil company guy to admit that there
were cold starting problems with the new fuel, that none of the higher
ups I called would admit it.
He said that was par for the course and he wasn't suprised.
The issue is higher flash point, just as I suspected.
And the reason the new fuel is eating your fuel lines and he told me
they just got an advisory that it is eating the "O" rings out of
injectors is that they are trying various additives, probably like the
toulene someone on the list was recommending, to raise the flash point
of the fuel.
So they are testing additives on the public's vehicles to try and find
something that will raise the flash point but not dissolve all your
seals and they haven't succeeded on either count yet.