Page 60 - WHITE BOOK

Appendix D
Oil and Wear Debris Analysis Data
Oil CFR. Fuel
Engine Mileage (km)
Oil Mileage (km)
Viscosity at 100C
TAN Water (mg KOH/g) (ppm)
Fe Ag Al Cr Cu Sn Si B
Instant Lubricant Test
Comments
Oil and oil-wetted components in good condition.
Summary
Oil and oil-wetted components in good
Spec.
5W30 34482 Gas
5W30 38706 Gas
Suspect erroneous oil usage information. Eventhough the oil is apparently new, it shows signs of degradation; high acidity (TAN) and low viscosity. High copper (Cu) levels indicate worn bearings and bushings.
Suspect that oil change took place between 53202 km and 55735 km as the oil properties improved and wear metal levels decrease. Copper (Cu) level remains high indicating the presence of worn bearings and or bushings.
Copper (Cu) level significantly increased indicating the severity of the worn bearings and or bushings. Copper with high moisture content will promote oil oxidation (increase viscosity and TAN).
Copper (Cu) level significantly increased indicating the severity of the worn bearings and or bushings. Copper with high moisture content will promote oil oxidation (increase viscosity and TAN).
5W30 38706 Gas
55735
2533
10.1
2
8 0 2
0 32
0 19
2 Good
5W30 38706 Gas
59580
6378
9.7
3.13 1234
14.9 0 3.2
0.4 46
0 23.6
3 Good
Suspect that oil mileage information provided may be erroneous as the oil at mileage 0 km shows signs of degradation and high copper (Cu) level. The presence of copper (Cu) and moisture is promoting oil oxidation. 0 cycle completed
5W30 38706 Gas
64389
11187
9.4
4.05 1498
26.1 0 4.4
0.9 60.2
0.9 29.1
3.8 Good
5W30 51321 Gas 5W30 51321 Gas
134933 154731
0 16132
10.4 12.5
2.65 1076 8.4 738
3.5 0 2.9 46 0 21
0.2 1.8 4 25
0 6 2 78
0.7 Good 1 Good
Oil properties and wear metal levels are good
5W30 51321 Gas
154731
0
11.4
5.3 632
41 0 20
3 21
0 62
1
Oil change supposedly took place. Oil acidity (TAN) and the copper (Cu) and sand/dust (Si) are still abnormally high.
Oil properties and wear metal levels are good. Unexpected values based on previous sample. Oil acidity (TAN) has increased but the oil mileage has reached 20000 km. The high copper (Cu) content has decreased to acceptable level. Variations in the oil sampling technique may have contributed to the decrease in wear metal contents (i.e. sample taken cold). Oil was replaced
5W30 51321 Gas 5W30 51321 Gas
165256 175637
10525 20906
11.2 10.1
3.61 884 5.1 1150
16.3 0 4.8 34 0 18.2
0.8 5.1 2.5 12.3
0 19.7 0 32.4
0.9 1.1
D-6
Type
99598 53202
0 0
9.91 9.2
3.005 5.1
2.7 0 1.2 33.4 0.1 5.1
0 0.3 0.9 48.5
0 4.8 2.5 17.5
1.3 New 5.8 Good
Only sample received from that CFR
condition. Only 1 sample received from that CFR. 0 cycle completed
Copper (Cu) content is high evidence of worn bearings and bushings. High sand/dirt (Si) content found. Oil acidity (TAN) is high, probably induced by the copper and moisture. Oil was replaced.
The oil viscosity held up throughout the 2 cycles. Oil acidity (TAN) was found high in samples with higher copper (Cu) content. Signs for worn bearing and or bushing weren’t picked up at the beginning of the 1st sampling cycle as the first 2 samples were missing. Therefore it cannot be confirmed whether or not the worn bearings and or bushings was caused by the extension of the oil change interval. 2 cycles completed (partially).