The motor oil canister is an item used to lubricate the Satsuma's engine. Canisters can be bought from Teimo's Shop in Peräjärvi for 149 mk per canister. The oil is poured into the capped hole on the rocker cover. Make sure to have the pistons inside the engine when pouring the oil in, otherwise it will not fill.
The quality of the motor oil in the engine can be checked by using the oil dipstick; it also shows how much motor oil is currently inside. The dipstick is attached to the car, next to where the oil filter is placed, and can be used by pressing .