3 3.5 Operating Conditions Engine Operation 26248 0 Battery Efficient cold starting requires a healthy battery (see 6.7.1). The starting limit temperature can be lowered by 4-5°C by heating the battery up to about +20°C. To do so, remove the battery and store in a warm place. Lube Oil Viscosity Select the oil viscosity (SAE grade) according to the ambient temperature when the engine is started (see 4.1.2). Increase oil change frequency when operat- ing below –10°C, see 6.1.1. Diesel Fuel Use winter-grade diesel fuel for operation below 0°C, see 4.2.2. Coolant Set the water/antifreeze mix to suit the lowest likely temperature (max. –35°C), see 4.3.1.
Additional Maintenance Work Drain the sludge from the fuel tank once a week by undoing the drain plug. Adjust the oil level in the oil bath air cleaner (if fitted) to suit the ambient temperature. At temperatures below –20°C, lubricate the flywheel ring gear from time to time with low-temperature grease, such as Bosch FT 1 V 31. To do so, remove the starter and introduce the grease through the pinion hole. Cold-Start Aids At temperatures near or below freezing point, use glow plugs if necessary (see 3.2.1). This not only lowers the starting limit temperature, but provides easier starting at temperatures normally not requiring a starting aid. 3.5.1 Winter Operation 26248 0 26248 0