Where about's do you live? Here in Missouri, as well as in Illinois, Indiana and Ohio, I think most all stations sell #2 Diesel. I know in the winter time they run treatment in the fuel to prevent it from gelling but I don't know that they really change the name of it.
Also, other than the light being on, is there any issue with the truck? Or is it just an eyesore. If there was no mechanical issue with it, I don't know that I would worry all that much about it. I did a google search of the difference between #1 and #2 Diesel and I believe is that 1 is for Winter use mainly since it doesn't gel like 2 would. So, actually, I would think that by spring or summer time, they would switch back to 2 and thus your light would go away =)
Also, other than the light being on, is there any issue with the truck? Or is it just an eyesore. If there was no mechanical issue with it, I don't know that I would worry all that much about it. I did a google search of the difference between #1 and #2 Diesel and I believe is that 1 is for Winter use mainly since it doesn't gel like 2 would. So, actually, I would think that by spring or summer time, they would switch back to 2 and thus your light would go away =)