Lubrication system Oil analysis To be able to extend the oil change intervals us- ing an oil analysis, Scania LDF-2 and LDF-3 oils must be used. Oil companies can offer analysis of the engine oil. The following conditions must remain fulfilled when the oil is changed. Viscosity at 100°C (212°F): max. ±20% of original value of the fresh oil. TBN (in accordance with ASTM D4739): > 3.5 TBN (in accordance with ASTM D4739): > TAN (in accordance with ASTM D664) Soot (DIN 51452): Such analysis measures the oil's TBN (Total Base Number), TAN (Total Acid Number), fuel dilution, water content, viscosity and the quanti- ty of particles and soot in the oil.
The result of a series of analyses is used as the basis for establishing a suitable oil change inter- val. If the conditions are changed, a new oil analysis programme must be carried out to establish new change intervals. Checking oil level Checking the oil level with the engine switched off 2 Note: Leave the engine off for at least 1 minute before checking the oil level. 1 1. Remove the oil dipstick (1) and check the oil level. The correct level is between the mini- mum and maximum marks on the oil dip- stick. 2. Top up with more oil (2) when the oil level is at or below the lower mark. 312 506 Information on the correct oil type is found under the heading Oil grade.
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