Deisel is deisel, or is it?

To date they make 2 kinds of diesel for common use. Low sulfur which can be used on or off road and High sulfur which can only be used off road.

The problem is most jobbers (fuel suppliers) shop price rather than get there product from the same place every time. Some manufactures only stock one kind because of tank cost but some have both.

For instance if you lived by me and the jobber bought his diesel from Shell today he would be getting dyed low sulfur. Then tomorrow Exxon may have a better price so he gets it there. He would be getting High sulfur this time and mixing it with the Low sulfur in his tanks he bought yesterday.
As you can see it gets very complicated to make sure what kind you are getting.

I feel it is better to use High sulfur in older engines but it is better to use Low sulfur dyed in newer engines. If you have a newer tractor you may want to ask for and insist on low sulfur but as stated above you may be just told what you want to hear so you will buy what he has.

Wait to next year and this is really going to get complicated because they are coming out with a new ultra low sulfur diesel then.

California has ULSD for two years now and here in Phoenix we get get ULSD some of the time as we get part of our diesel from Cal with the other part coming from ElPaso TX via pipeline.

There's rummors that ULSD is green at the pump nozzel. I have noticed the green fuel but it turns amber gold when in the sun. When I was in western Colorado last year I noticed there fuel was clear at the pump and stunk really bad. So I really don't know.

Others have stated Flagstaff, Az also has green diesel but yet they get there diesel from New Mexico via pipeline and NM is not known to have ULSD.

Anyway I can't tell any difference on my PSD using ULSD than other #2D that I've used. I also use ATF typeF as a additive for injector wear so I might not notice any difference.

T_Bone

The diesel engine oil recommendation they referred to was DM or DS (which had to be used with high sulphur fuel and halve the change interval) where today you have Rotella T and Delvac and Delo. Times change.

Mark