WBusa,
You may want to go over to the 3 Gen. , Engine and Transmission, site. There are two threads that may be of interest to You. On page one, You will find a thread entitled "States to Delay Diesel Lubrication Standards". Then, on page three, You will find a thread entitled "poll: Do You Use a Fuel Additive ('03's only). Don't worry about the "('03's only)". A lot of the information applies to all of us. Some of this is good reading.
The main thing, so far as I can tell, is that the additive does NOT use alcohol as an emulsifier (for elimination of water).
Hope this helps. Joe F. (Buffalo)
PS: Not to flame Power Service but, I have heard that it is a highly diluted product that has more diesel fuel/Kerosene in it, and not too much of the stuff You really want. Some of the additives seem to be much more concentrated. With PS, most of what You are buying is what You already have in the tank, diesel fuel.