Gas mileage
Maybe 325 in the Explorer on 21 gallons. Had it for 2 or 3 months and I've only had a full tank twice. Gets about 15-17mpg.
28mpg on average with Bike & Explorer..
On highway I would drive up North. It was a 220Mile trip and I would get there with the needle Right Under half a tank. Thats about 27+ MPG and thats considering doing 80+mph Most of the way and a couple 120+ runs. So Im sure I would of got over 30mpg if I kept the car at 75mph all the way.
Got to love that 6th gear.
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I know the cars are nothing alike, but when I had my old Sunfire it went from around 290-300 miles on a tank down to 180-200. After two weeks of that I took it in for a tune up and they replaced my o2 sensors and the problem was solved(just throwing ideas out).
On another note, wouldn't a catch can be cheaper in the long run? With inflation and everything, that $4 valve might not be $4 for long.
Hope you figure out the problem. 
