Ps/mmo!!!!!!!!!
 

Just got back from an almost 3000 mile round trip. Chicago to Florida and back. Got the best mileage ever with my 04.5. The best I had ever gotten prior to this trip was 17.5 empty highway. This trip the best tank mileage was 20.6 and the wost was 19.5. I was filling up when the everhead got almost to zero and was getting from 560-600 miles per tank. And I have not installed the fuel tank vent kit yet!!! During this trip I was experimenting with my Juice settings from stock to level 3 to see if which would give me the best mileage. No noticable change in mileage on any of the settings, only power. So my conclusion is that my recent mileage gain is due to the PS/MMO mixture I started using. I would add 16oz of PS and 4oz of MMO per tank. I Used only 5 1/4 tanks of fuel for the whole round trip!!! The reason I drove down this time was that rental cars and airfare was outragious. I fugured I could drive there and back cheaper. It wound up being a lot cheaper because of the mileage I got!!! Thanks for the tip everyone!!!:cool: :D

I wonder if your good results were from getting summer blend down south after being use to the winter blend up here so long. You might drop performance again now that your back, until your area switches over to the summer blend. Just thinking out loud....

The last few day I picked up about a mile and a half regular and steady, Alabama must have gone to summer fuel.

I do not think they have made the switch up here in northern Illinois yet. Filled her up before I left and again in central Indiana on the way back. Mileage didn't vary much at all. The wind direction played the major roll in tank mileage variation. Also it was upper 80's down there and low 30's here and snowing when I got back!!!:confused: