刚租了车，这个加油条款是什么意思？需要我购

刚租了车，这个加油条款是什么意思？需要我购买第一箱油然后还车的时候还要加满油吗？那我不是亏了一箱油钱？
Fuel Policy:The car rental company will have the car filled with fuel for you and you have to return the car with a full tank. The car rental company will charge you for every missing quarter of a tank.