Unscrew the cover and you can see the engine structure inside. Prepare unsealed engine oil, put the engine oil along the oil filler, and pour the engine oil into it.
After pouring according to the regulations, take out the dipstick and check the refueling situation. After reaching the marking line, screw on the cap to complete the filling.
The president of Maserati is a high-performance luxury car launched by Italian automobile manufacturer Maserati. 1963, Maserati pioneered the concept of "high-performance luxury four-door sedan", and the first generation of Maserati President sedan came out.