I have not found any chain stores that carry it, and the local truck stops here that I have checked out don't either. I have no idea if there is better pricing out there, but I have bought mine online from http://www.kennedydiesel.com.
I had the same question, and called FPPF yesterday. They were able to provide me with a number of sotres in my area where I could purchase Total Power. None of the locations are truck fuel stops...they are all major truck repair facilities. FPPF's number is 1-800-735-3773.
MYSTIK distributed by CITGO is a good Diesel Fuel Conditioner to. I get mine at a local fuel and lubrication distributor. Haven't found it atany of our local CITGO gas stations but I haven't found one yet that sells diesel. Have seen it large CITGO stations in the north .
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