MTU 12 V 4000 M63 Specifications download pdf (Page 11)

Lubricants for four-stroke engines 09

• Miscellaneous assembly materials

Unambiguous conclusions as to the wear status of the engine components involved are therefore not

possible. This means that no limit values can be given for wear-metal contents.

Used-oil analysis

In order to check the used oil, it is recommended that regular oil analyses be carried out. Oil samples should be

taken and analyzed at least once per year and during each oil change and under certain conditions, depending on

application and the engine’s operating conditions, sampling / analysis should take place more frequently.

The test methods and limit values given in Table 4 and Table 5 (Analytical limit values for used diesel / gas engine

oils) indicate when the results of an individual oil sample analysis are to be regarded as abnormal.

An abnormal result requires immediate investigation and remedy of the abnormality.

The limit values relate to individual oil samples. When these limit values are reached or exceeded,

an immediate oil change is necessary. The results of the oil analysis do not necessarily give an

indication of the wear status of particular components.

In addition to the analytical limit values, the engine condition, its operating condition and any

operational faults are decisive factors with regard to oil changes.

Some of the signs of oil deterioration are:

• Abnormally heavy deposits or precipitates in the engine or engine-mounted parts such as oil ﬁlters,

centrifugal oil ﬁlters or separators, especially in comparison with the previous analysis.

• Abnormal discoloration of components.

Analytical limit values for used diesel engine oils (Table 4)

Test Method Limit Value

Viscosity at 100 °C

max. mm²/s

ASTM D445

DIN 51562

SAE 30

SAE 5W-30

SAE 10W-30

15.0

SAE 40

SAE 10W-40

SAE 15W-40

19.0

min. mm²/s SAE 30

SAE 5W-30

SAE 10W-30

9.0

SAE 40

SAE 10W-40

SAE 15W-40

10.5

Flash point °C (COC) ASTM D 92

ISO 2592

Min. 190

Flash point °C (PM) ASTM D 93

EN 22719

Min. 140

Soot (% weight)

DIN 51452

CEC-L-82-A-97

Max. 3.0 (Oil category 1)

Max. 3.5 ( Oil category 2, 2.1, 3 and 3.1)

Total base number

(mg K OH/g)

ASTM D 2896

ISO 3771

Min. 50% of new-oil value

Water (% by vol.) ASTM D 6304

EN 12937

ISO 6296

Max. 0.2

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MTU 12 V 4000 M63 Specifications Page 11

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