This may sound awkward b
ut as gas prices increase, so does gas thefts. Buy gas locking caps, this locks the cap and thieves are unable to open the cap to remove fuel out of the gallon. In r gas caps as they deteriorate over time. Without a fuel cap, gasoline vapors will be present around your car at all times. Those vapors can be ignited by a random spark or flame and are very dangerous if you are involved in an accident or rollover.
According to Sun Oil Company research, a vehicle with a missing or inoperative fuel cap will allow 176 pounds (22 gallons) of gasoline to evaporate over the period of one year.
Gasoline vapors emit hydrocarbons which dissolve the earth's ozone layer and cause smog.