This is my fifth UOA on my 2002 Toyota Ipsum 2.4L (2AZ-FE) done using Schaeffers/WearCheck kit. Previous four UOAs were by Dyson Analysis. Latest results on the right, oldest on the left. The trace water contamination is probably from leaving the car sitting on the driveway for 3~4 weeks without starting.
Oil
Toyota OEM, Castrol RS 10w50, Castrol RS 10w50, Castrol SLX 0w30, Fuchs Titan GT1 0w20
Mileage on car
1072km, 6056km, 11080km, 15973km, 32125km
Mileage on oil
1072km, 4984km, 5024km, 4893km, 5062km
Time on oil
1month, 7months, 6.5months, 5months, 7months
Make-up oil
none, none, none, none, none
CONTAMINATION
Silcon
200, 69, 32, 26, 12
Potassium
0, 1, 0, 0, 0.2
Sodium
3, 5, 1, 1, 0.7
Fuel %
N, N, N, N, Glycol
N, N, N, N, --
Water %
N, N, N, N, 0.1
Soot %
44, 0, 0, 0, 0
Sulfation
18, 40, 75, 86, 213
Nitration
30, 77, 105, 4, 85
OIL CONDITION
Boron
--, --, --, --, 9.0
Barium
--, --, --, --, 0.5
Calcium
1540, 2568, 2463, 3075, 2810
Magnesium
16, 117, 174, 124, 17
Molybdenum
435, 84, 12, 3, 8.9
Sodium
3, 5, 1, 1, 0.7
Phosphorus
693, 751, 741, 775, 413
Sulfur
--, --, --, --, 3568
Zinc
861, 895, 850, 830, 155
Vis@40C
--, --, --, --, --
Vis@100C
9.4, 18.5, 17.9, 13.1, 8.49
Oxidation
22, 63, 76, 117, 2975
TAN
--, --, --, --, 2.00
TBN
6, 6, 7, 9, --
WEAR
Iron
6, 11, 11, 11, 13
Nickel
--, --, --, --, 0.0
Chromium
0, 0, 0, 0, 0.1
Titanium
--, --, --, --, 0.0
Copper
47, 16, 4, 2, 1.0
Aluminum
7, 3, 2, 2, 2.2
Tin
1, 5, 1, 0, 0.0
Lead
1, 7, 3, 9, 1.4
Silver
--, --, --, --, 0.0
PARTICLE SIZE COUNT
5 µm
5000
10 µm
2000
15 µm
650
ISO 4406 Cleanliness Code Rating
20/17
WearCheck's Comments
There is a trace of moisture present in the oil. The condition of oil is suitable for further service. All component wear rates are normal.