Lubrication system
OPM 320 en-GB 24
© Scania CV AB 2019, Sweden
Oil analysis
To be able to extend the oil change intervals us-
ing an oil analysis, Scania LDF-4 oils must be
used. Certain laboratories offer engine oil analy-
sis.
The following conditions must remain fulfilled
when the oil is changed:
• Viscosity at 100°C (212°F): max. ±20% of
the 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).
• Oil oxidation (in accordance with
DIN 51453) > 10.
During analysis, the oil’s TBN (Total Base Num-
ber), TAN (Total Acid Number), fuel dilution,
water content and viscosity are measured, as well
as the quantity of particles 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
oil change intervals. Work out the new oil
change interval for the engine in conjunction
with the workshop.
Only Scania LDF-4 oils may be used in conjunc-
tion with oil analysis and a possible extended oil
change interval.
Depending on the market, the warranty condi-
tions may also change if the oil change intervals
differ from the recommended Scania timetable.
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