so HOLY CRAp! I just filled up after the first tank of trying P&G and DWL, and wow I got 418.8 miles out of one tank! compare that to the tank previous, (driving like an asshat) where I usually got around 350 miles - it started feeling really weird after I hit around 360 and kinda was itching for a fill up but didn't need it... then I hit 400... what a trip. I got almost another whole commute to work and back (not quite but almost)