Page 62 - WHITE BOOK

Appendix D
Oil and Wear Debris Analysis Data
Oil CFR. Fuel
Engine Mileage (km)
Oil Mileage (km)
Viscosity TAN
at 100C (mg KOH/g)
Water (ppm)
Fe Ag 50.7 0.1
Al Cr 4.9 1.3
Cu 20
Sn Si 0 22.8
B 6.6
Instant Lubricant Test
Comments
Low viscosity, high oil acidity (TAN) and elevated
Summary
Spec.
5W30 40138 Gas
5W30 40138 Gas
197580
6952
9.7 2.6
11 0
2 0
9
0 4
2
Good
Suspect that oil changed or top up occurred after 190628 km as the oil properties improved and wear metal levels decreased.
Viscosity is slightly decreased.
5W30 40138 Gas 5W30 40138 Gas
202158 208161
11530 17533
8.96 3 9.2 6.24
13.4 0 19.6 0.1
2.5 0.4 3 0.6
10.1 10.6
0 3.5 0 4.1
2.6 2.7
Good Good
The oil is showing signs of degradation as the oil acidity (TAN) increased. No increases in wear metals levels. Oil changed.
1st sample received since last 11000 km. Oil acidity (TAN) and water content high. Increase in iron (Fe) content indicates worn crankshafts, valves, cylinder liner and or bearings.
Incoherence between oil mileage and oil properties and wear metals levels. Suspect that some usage information may be erroneous rendering trending difficult. Possibly 2 cycles completed.
5W30 40138 Gas
219259
11098
9.9 5.01
1706
75.4 0
8.1 1.4
15.5
0 6.1
4.6
Good
5W30 40138 Gas 5W30 40138 Gas
236810 246675
9473 19338
9.65 9.8
4.27 7.8
1231 51.20 0.1 1075 81.6 0
5.7 1.3 7.4 1.6
15.3 18.1
0 36.3 0 16.3
3 5.4
OK, Plan change
Suspect oil was replaced since 219259 km. Oil properties and oil-wetted components health are OK. High sand/dirt (Si) level.
Increasing iron (Fe) level indicates wearing of crankshafts, valves, cylinder liner and or bearings. High oil acidity (TAN). Oil was replaced.
5W30 60711 Gas 5W30 60711 Gas
18436 26108
0 7672
10.5 9.9
2.81 3.6
20.3 0 24.8 0
1.7 0.4 4.5 0.8
25.7 138
0 17.9 0.2 37.3
1.5 1.9
Good Good
High copper (Cu) content indicate worn bearings and or bushings.
Drastic copper (Cu) content increase over the last 7000 km indicates severely worn bearing and or bushings.
The oil properties were good throughout the 1st cycle. Severe signs of worn bearings and or bushings were evident at the beginning of the cycle indicating that the oil change extension didn’t cause the component excessive wearing. 1 cycle completed.
5W30 60711 Gas
32165
13729
9.6
4.5
44.5 0.1
6.4 1.6
131
1.2 46.4
2.2
OK, Plan change
Extremely high copper content km indicates severely worn bearing and or bushings.
Type
190628
0
9.2 3.465
Good
wear metal levels for recently changed oil. High copper (Cu) levels indicate worn bearings and bushings. Elevated iron (Fe) indicates worn crankshafts, valves, cylinder liner and or bearings. High sand/dirt (Si) content found. High sand/dirt (Si) content found.
* The two diesel engines (41273 and 52709) were dropped off the program as the study focused on gasoline engines.
D-8
OK, Plan change