GET THIS CHECKED OUT AS FAST AS YOU CAN!!! If your gas leak is htat close to your exhaust then you're looking at a possible fire / explosion hazzard!! Get it to a Ford Dealer (or other mechanic) as soon as you possibly can!! Dont screw around with gas leaks!!
Antifreeze does not enter your timing chain cover... oil does. Oil and antifreeze dont mix. Check your water pump gasket seal. Check upper and lower radiator pipes. Check Head gaskets. Check oil dipstick (if you see a beade of water in your oil.... hehe, have fun.).