I just picked up a 2002 Montana last night. This van had been sitting for about 6 months or so. When I got it to start the fuel gauge was on very close to empty. I went right to a gas station and put in 25.00. When I got back in the van the gauge was right up to full. I would love to believe 25$ would fill this but since I have a 2001 montana as well I know thats not the case. It should have been between 1/4 and 1/3 full. Any one know why this thing would go right up. Thanks