Here goes, my first ever UOA. Mobil 1 5W-30 SN in a 2012 Cruze Eco manual transmission, 1.4L Turbo, from April to December 2013 Eastern Ontario, Canada, climate. 12,000 km (~7,500 mi) on the oil, in service from 16,800 km to 28,800 km (~17,900 mi) at time of change. OLM read 35% oil life remaining, suggesting a change interval of ~18,500 km (~11,500 mi).
This oil gets treated gently as the majority of my driving is at relatively low speeds. Coolant temps in this engine are high (225-240F) and it has an oil/water heat exchanger to warm the oil and then help maintain its temperature.
It would appear that the starting oil condition values used by WearCheck are not correct? Mobil advertises M1 5W-30 SN viscosity as 11.0 @ 100C and 61.7 @ 40C, with a VI of 172, which doesn't corelate to their data in the report?
Code:
Time on Unit 28848 kms
Time on Oil 12009 kms
Time on Filter 12009 kms
CONTAMINATION CURRENT ABN
Silicon 8.5 30
Potassium 3.0 20
Sodium 0.7 80
Fuel (%)
Glycol --- 0.06
Water (%)
Soot (%) 0 ---
Sulfation (%) 67 100
Nitration (%) 71 100
WEAR CURRENT ABN
Iron 19 150
Nickel 0.2 5
Chromium 0.3 20
Titanium 0.0 ---
Copper 4.3 155
Aluminum 7.8 40
Tin 0.1 10
Lead 0.1 50
Silver 0.0 2
OIL CONDITION CURRENT BASE
Boron 32 94
Barium 0.1 0.0
Calcium 1171 820
Magnesium 613 1388
Molybdenum 75 0.0
Sodium 0.7 0.0
Phosphorus 621 720
Sulfur 1817 2240
Zinc 733 780
Visc 40C (cst) 53.3 64.8
Visc 100C (cst) 9.7 11.3
Viscosity Index 169 169
Oxidation (%) 69
This oil gets treated gently as the majority of my driving is at relatively low speeds. Coolant temps in this engine are high (225-240F) and it has an oil/water heat exchanger to warm the oil and then help maintain its temperature.
It would appear that the starting oil condition values used by WearCheck are not correct? Mobil advertises M1 5W-30 SN viscosity as 11.0 @ 100C and 61.7 @ 40C, with a VI of 172, which doesn't corelate to their data in the report?
Code:
Time on Unit 28848 kms
Time on Oil 12009 kms
Time on Filter 12009 kms
CONTAMINATION CURRENT ABN
Silicon 8.5 30
Potassium 3.0 20
Sodium 0.7 80
Fuel (%)
Glycol --- 0.06
Water (%)
Soot (%) 0 ---
Sulfation (%) 67 100
Nitration (%) 71 100
WEAR CURRENT ABN
Iron 19 150
Nickel 0.2 5
Chromium 0.3 20
Titanium 0.0 ---
Copper 4.3 155
Aluminum 7.8 40
Tin 0.1 10
Lead 0.1 50
Silver 0.0 2
OIL CONDITION CURRENT BASE
Boron 32 94
Barium 0.1 0.0
Calcium 1171 820
Magnesium 613 1388
Molybdenum 75 0.0
Sodium 0.7 0.0
Phosphorus 621 720
Sulfur 1817 2240
Zinc 733 780
Visc 40C (cst) 53.3 64.8
Visc 100C (cst) 9.7 11.3
Viscosity Index 169 169
Oxidation (%) 69