The commander of the Rebel Alliance has been using the Nabu-OilFilterCartridge on each speeder. This type of filter cartridge costs 7.53 Credits per unit and it has to be replaced each 7000km, with 1 Liter of oil being added each 1000km thereafter until the next oil change. A Tatooine Scavenger offered the Tatooine- Oil FilterCartridge from the scraps of drones he collected on Tatooine's deserts, which only cost 3.28 Credits claims that if this unit is used and replaced in each 2000km with the oil also being changed, no oil will have to be added between changes. Oil costing only 1.12 Credits per liter can be used in place of the presently used oil, which costs 2.34 Credits per liter. If the motor requires 9 Liters of oil when the oil is changed. Currency: Credits Determine the cost of the First Option The commander of the Rebel Alliance has been using the Nabu-OilFilterCartridge on each speeder. This type of filter cartridge costs 7.53 Credits per unit and it has to be replaced each 7000km, with 1 Liter of oil being added each 1000km thereafter until the next oil change. A Tatooine Scavenger offered the Tatooine- Oil FilterCartridge from the scraps of drones he collected on Tatooine's deserts, which only cost 3.28 Credits claims that if this unit is used and replaced in each 2000km with the oil also being changed, no oil will have to be added between changes. Oil costing only 1.12 Credits per liter can be used in place of the presently used oil, which costs 2.34 Credits per liter. If the motor requires 9 Liters of oil when the oil is changed. Currency: Credits Determine the cost of the First Option