Lubrication System
Shorter oil spray nozzles are used on the N62B48. They have been adapted to the longer stroke of the piston and must not be confused with the oil spray nozzles of the N62B44.
The N62B48 is equipped with a modified oil pan. The bottom section of the oil pan has been lowered by 16mm to accommodate the increased displacement of the N62B48. This modification minimizes power losses that occur in the crankcase as the result of pumping and splashing movements. By lowering the bottom section of the oil pan it was necessary to open up the thrust panel in this area. As a result, the bottom section of the oil pan on the N62B48 was no longer supported by the thrust panel and lies freely on the underbody. For this reason, the oil pan material has been changed from cast aluminum to sheet steel. The bottom section of the oil pan is made from 2 mm thick sheet steel and is less susceptible to mechanical influences compared to the B44 (cast aluminum).
The dipstick has been lengthened in line with lowering the bottom section of the oil pan. Due to the lowered bottom section of the oil pan in the N62B48, an extended intake snorkel is installed on the oil pump.
The N62B48 features an oil cooler with increased cooling capacity. It is located in front of the radiator under the A/C condenser in the cooling module. The function and design are identical to those of the oil coolers already used in the N62 for the Hot Climate variants.