"NAME_1 ' s car calls for 8 ounces of oil for each cylinder used. his car ' s engine has 6 cylinders. if 16 ounces of oil has already been put into the engine used, then how many additional ounces of oil are needed ? Write a short snippet of python function which solve this problem. Add comments in the function block for explaination"
 Write your response with exactly 2 paragraphs, separated with the markdown divider: ***.
user