3 © 2001 3.5 Operating Conditions Engine Operation © 26 248 2 Battery –Efficient cold starting requires the battery to be well-charged, see 6.7.1. –The starting limit temperatures can be low- ered 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) ac- cording to the ambient temperature when starting the engine, see 4.1.2. – Increase oil change frequency when operating below -10 °C, see 6.1.1. Diesel Fuel – Use winter-grade diesel fuel for operation below 0 °C, see 4.2.2 Additional Maintenance Work – Drain the sludge from the fuel tank once a week.
(Unscrew the sludge drain plug) – If necessary, allow the oil in the oil bath air cleaner and the engine oil to settle at the ambient temperature. – Below -20 °C, after removing the starter if necessary, smear the ring gear on the fly wheel via the pinion bore from time to time with cold-resistant grease (e.g. Bosch FT 1 V 31 grease). Cold Start Assistance At temperatures near or below freezing point, use sheathed glow plugs if neces- sary, see 3.2.1. This not only lowers the starting limit temperature, but provides easier starting at temperatures normally not requir- ing a starting aid. 3.5.1 Winter Operation © 26 248 2 © 26 248 2