I have a Chevie Astro 2000, which I have owned since 2005 and now has approximately 175,000 miles on it…
The last two times I filled the gas tank (which has a very sensitive filling nozzle) I have a hard time believing my mileage.
I normally get 15 mpg, sometimes 16. MY gas gauge is shot and always shows full. I know I can get 395 miles on a full tank.
The last two times I have filled it, the mpg is unreal. (I use the trip mileage gauge to know when to fill, lol). The other day,
when I was filling it, I had driven 281 miles and it stopped accepting gas at 10 gallons I would click it again and only get
.03 gallon each time. The fill before that, I filled it till it was overflowing, so I know I had started out with a full tank.
Having done this many times, I got it up to 12 gallons, which meant I was now getting 24 mpg which
I know it’s never done before. The same thing happened the fill before. Is it possible to somehow get a vacumn in the tank or
something, since I should have been able to put 17 or 18 gallons in the tank? The van is garaged so I don’t think anyone could
have put something in the tank to lower the capacity. don’t say trade it because I m on Soc. Security and can’t afford to get
another vehicle. Help? lol