Chevy colbalt issue.
I just bought a 05 Chevy colbalt, one of the first
things I did was replace spark plugs and do an oil
change ect. I drove to a store 5 minutes away and
back home after filling up the car, it sat over night
until I had to leave for work in the morning and I lost
a quarter tank gas. No leaks, no smell. What could
cause this issue??? Thanks