4.1 Lubricating oil Consumables z If the oil change intervals are not reached within a year, the oil change should be car- ried out at least 1x yearly. °C Viscosity The ambient temperature at the installation site or area of application of the engine is decisive for the choice of the right viscosity class. Too high a viscosity can lead to starting difficulties, too low a viscosity can endanger the lubricati- on effect and cause high lubricating oil con- sumption. At ambient temperatures below -40 °C the lubricating oil must be pre-heated (e.g. by storing the vehicle or machine in a shed). The viscosity is classified according to SAE. Multipurpose oils should be used basically.
Single purpose oils can be used in closed, he- ated rooms at temperatures >5 °C. Depending on the ambient temperature we re- commend the following common viscosity classes: 0 60 55 50 45 35 40 4 30 25 15 20 SAE 0W-40 SAE 5W-30 SAE 5W-40 SAE 10W-30 SAE 10W-40 SAE 15W-40 SAE 20W-50 SAE 20W-50 10 5 -5 -10 -15 -20 -25 -35 -30 -40 23 SA E0W-30