5 to 9 mpg.

What is your question?

I get 5 to 9 mpg, and yes, I KNOW HOW to figure mileage. I get between 130 and 190 miles from a 20gal tank of gas. A 2000 Chev Venture produced 420 mile to a 20 gal tank. Yes, its tuned up. Yes, filters are clean. Had fuel pump replaced. Mileage got worse. No hesitation, no evidence of rich lean / fuel, no other performance problems. If I constantly re-set the avg mpg computer thingy, I get around 330 miles per tank. If I re-set avg mpg ONLY after refill gas tank, it goes back to around 8 mpg. Avg MPG is accurate to +/- 3 mpg.