I was just about to add my 3 ounces of FP to my jeep (15 Gallon tank) and had a question. I typically don't run my gas down to empty. I usually fill up when I get down to half tank or quarter tank in a rare instance. I was wondering if I add my Fuel power before I fill up and than use up half a tank and say add 7.5 gallons of "new gas" would I just have to add 1.5 ounces of new fuel power? I want to use FP every tank but don't want to keep adding it if it doesn't mix well and I end up with a huge amount on the bottom of my tank after a few months.