28 © Scania Industrial & Marine Engines 2003-10:1
LUBRICATING OIL SYSTEM
OIL GRADE
The engine oil must at least meet the requirements for one of the following
oil classifications:
- ACEA E3, E4 or E5
- The Total Base Number (TBN) should be minimum 12-13
(ASTM 2896).
- Check with your oil supplier that the oil meets these requirements.
- The specified oil change intervals are applicable provided that the fuel
sulphur content does not exceed 0.3% by weight. If the sulphur content
is greater than 0.3% but no more than 1.0%, the oil change interval must
be halved (200 h).
- Viscosities are shown in the figure below.
- When ambient temperatures are extremely low: Consult your nearest
Scania representative to avoid starting difficulties.
Oil analysis
Some oil companies can offer analysis of the engine oil. Such analysis
measures the oil's TBN (Total Base Number), TAN (Total Acid Number),
fuel dilution, water content, viscosity and the quantity of wear particles and
soot in the oil.
The result of a series of analyses is used as the basis for establishing a
suitable oil change interval.
If the conditions are changed, a new oil analysis programme must be carried
out to establish the new change interval.
Additives must not be used.
The oil should be suitable for
all temperature variations until
the next oil change.
-40 -30 -20 -10 0 10 20 30 40
°C
SAE 10W-30
SAE 20W-30
SAE 30
SAE 40
SAE 50
SAE 5W-30
SAE 15W-40
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