SwRI did the SAE J1321 Fuel Economy test which is THE test in the trucking industry. Anything over 2% considered to be a success and is hardly ever seen. In 25 years at SwRI the man over the test has only seen 3 additives get over 2%.....ours is one of them.
It's a preorder. I ordered a gallon today. I figure I'm looking at the first or second week of Decmeber before I get it. Any earlier is gravy. Hopefully I have enough FP60 to last me the month and a half.