Gas Milage
My Gas milage has gone from 23-25 on the hwy.(back when the van had 80,000miles)
I now get 17-19 miles to the gallon on the hwy. (175,000miles on the van)
It has top of the line sparkplugs and wires 10,000 miles ago.
What do i need to do to get the milage back up ?????
thanks to any one who knows......Al