The reason they paid for the gas was they were getting paid by the customer when gas was high. By law, as employees, we are enitiled to be compensated for all of our gas usage. If you can prove that you drove 100 miles a day, they need to make sure you are paid for those miles. Make sure you keep track of your miles and if your gas codes don't equate ask that you be reimbursed the difference, if they refuse, you can contact the labor board.
This is CABL.com posting #275570. Tiny Link: cabl.co/mbjQQ