The oil level on this vehicle can be checked through the instrument cluster. Allow the vehicle to sit for 20-30 minutes. Turn the ignition to position 2 (all lights come on in dash) but do not turn the vehicle. Now scroll through your instrument cluster screen with your toggle switches on the steering wheel. You will find a screen where it displays checking oil level. It will take a few seconds to check and then will display if your oil is low or high or okay. Next to add oil simply go open the hood and find the oil filler cap located on top of the drivers side valve cover. Open and fill as needed. Note: Only use synthetic oil in MB products as the motors are made specifically for it.