Xtra Diesel / Bio-Diesel Covalizer Case of 15

One Xtra Diesel/Bio-Diesel 16 ounce container of our specially formulated conditioner for diesel fuel. At the suggested rate of 1 ounce per 25 gallons of diesel fuel you are provided with enough "Diesel/Bio-Diesel Xtra Covalizer" ™ per container to treat 400 gallons of fuel. Reported results or mileage improvements (up to a 30% increase) vary so our suggestion is you try a bottle first and test the results for yourself under controlled highway conditions