Just received my UOA result from WearCheck. The latest result is on the left while the previous UOA results are on the right. Comments provided are for the latest result. For the latest UOA, the motor oil used was the Motul 8100 X-cess 5W40. For the previous three UOAs, it was the Motul 300V 5W40 (the newest with the double-ester formulation and the remaining with single-ester formulation).
No make-up oil required. Driving condition: Hot (average of 30 degree Celsius), humidity (70% - 90% humidity) climate, mixture of both urban and highway driving (30%:70%). 2 trackdays were done at Sepang International Circuit with 3-4 hours of high engine speeds (up to 8,000rpm) for each trackday.
Miles on oil: 7,432 / 7,845 / 7,251 / 6,402
Time on oil: 7 months / 6 months / 7 months / 6 months
Unit Make : Honda
Unit Model : Civic SiR (JDM)
Engine/Trans: 1.6-litre DOHC VTEC (B16A)/ 5-speed manual
Air & oil filter: K&N, original Honda oil filter
Diagnostician : Doug Bogart
CONTAMINATION
There is no indication of any contamination in the component.
Silicon 32 / 1.5 / 19 / 16
Potassium 0 / 0.6 / 0.3 / 0
Sodium 8.8 / 3.8 / 3.0 / 3.4
Fuel (%) Glycol --- / --- / --- / ---
Water (%) --- / 0.123 / 0.117
Soot (%) 0 / 0.5 / 0.1 / 0.1
Sulfation 39 / 19 / 67 / 69
Nitration 16 / 9 / 14 / 13
OIL CONDITION
Oil Type: 4 LTR of SAE 5W40
The condition of the oil is acceptable for the time in service
Boron 1.3 / 0.9 / 2.2 / 0.8
Barium 0.3 / 0 / 0 / 0.6
Calcium 1220 / 2638 / 2328 / 2154
Magnesium 825 / 606 / 587 / 462
Molybdenum 110 / 538 / 73 / 63
Sodium 8.8 / 3.8 / 3.0 / 3.4
Phosphorus 729 / 1175 / 954 / 907
Sulfur 2802 / 5462 / 4181 / 4312
Zinc 878 / 1295 / 1161 / 1028
Visc@40°C --- / --- / --- / ---
Visc@100°C 14.83 / 13.7 / 13 / 12.8
Oxidation 58 / 18 / 109 / 104
TAN 3.62 / --- / 3.41 / 3.20
TBN --- / 9.05 / --- / ---
WEAR
All component wear rates are normal.
Iron 23 / 7.9 / 7.8 / 9.5
Nickel 1.4 / 0 / 0.2 / 0.2
Chromium 3.3 /0.4 / 1.1 / 1.4
Titanium 0.2 / 0 / 0.1 / 0.1
Copper 19 / 12 / 7.1 / 8.9
Aluminum 12 / 12 / 8.3 / 7.8
Tin 0 / 3.8 / 0 / 0
Lead 6.9 / 4.5 / 4.3 / 6.9
Silver 0 / 0 / 0 / 0
Oh, and during the service of this oil, I'd replaced the entire gearbox including the clutch cover, pressure disc and flywheel. I'd also replaced the valve cover gasket.
Any cause for concern for the increase in Fe, Cr, Ni, Cu and Na? Is it safe to assume that the Motul 8100 X-cess has a weaker additive package, particularly Ca, P, Zn and S, than the 300V? Starting TBN of virgin 8100 X-cess is 10.3. With a TAN of 3.62, does this mean the oil is still suitable for further use, e.g. to 15,000km (9,320 miles)? Strangely, the viscosity is higher than the starting 14.0. Why is this so?
Appreciate all your expert opinion and comment.
No make-up oil required. Driving condition: Hot (average of 30 degree Celsius), humidity (70% - 90% humidity) climate, mixture of both urban and highway driving (30%:70%). 2 trackdays were done at Sepang International Circuit with 3-4 hours of high engine speeds (up to 8,000rpm) for each trackday.
Miles on oil: 7,432 / 7,845 / 7,251 / 6,402
Time on oil: 7 months / 6 months / 7 months / 6 months
Unit Make : Honda
Unit Model : Civic SiR (JDM)
Engine/Trans: 1.6-litre DOHC VTEC (B16A)/ 5-speed manual
Air & oil filter: K&N, original Honda oil filter
Diagnostician : Doug Bogart
CONTAMINATION
There is no indication of any contamination in the component.
Silicon 32 / 1.5 / 19 / 16
Potassium 0 / 0.6 / 0.3 / 0
Sodium 8.8 / 3.8 / 3.0 / 3.4
Fuel (%) Glycol --- / --- / --- / ---
Water (%) --- / 0.123 / 0.117
Soot (%) 0 / 0.5 / 0.1 / 0.1
Sulfation 39 / 19 / 67 / 69
Nitration 16 / 9 / 14 / 13
OIL CONDITION
Oil Type: 4 LTR of SAE 5W40
The condition of the oil is acceptable for the time in service
Boron 1.3 / 0.9 / 2.2 / 0.8
Barium 0.3 / 0 / 0 / 0.6
Calcium 1220 / 2638 / 2328 / 2154
Magnesium 825 / 606 / 587 / 462
Molybdenum 110 / 538 / 73 / 63
Sodium 8.8 / 3.8 / 3.0 / 3.4
Phosphorus 729 / 1175 / 954 / 907
Sulfur 2802 / 5462 / 4181 / 4312
Zinc 878 / 1295 / 1161 / 1028
Visc@40°C --- / --- / --- / ---
Visc@100°C 14.83 / 13.7 / 13 / 12.8
Oxidation 58 / 18 / 109 / 104
TAN 3.62 / --- / 3.41 / 3.20
TBN --- / 9.05 / --- / ---
WEAR
All component wear rates are normal.
Iron 23 / 7.9 / 7.8 / 9.5
Nickel 1.4 / 0 / 0.2 / 0.2
Chromium 3.3 /0.4 / 1.1 / 1.4
Titanium 0.2 / 0 / 0.1 / 0.1
Copper 19 / 12 / 7.1 / 8.9
Aluminum 12 / 12 / 8.3 / 7.8
Tin 0 / 3.8 / 0 / 0
Lead 6.9 / 4.5 / 4.3 / 6.9
Silver 0 / 0 / 0 / 0
Oh, and during the service of this oil, I'd replaced the entire gearbox including the clutch cover, pressure disc and flywheel. I'd also replaced the valve cover gasket.
Any cause for concern for the increase in Fe, Cr, Ni, Cu and Na? Is it safe to assume that the Motul 8100 X-cess has a weaker additive package, particularly Ca, P, Zn and S, than the 300V? Starting TBN of virgin 8100 X-cess is 10.3. With a TAN of 3.62, does this mean the oil is still suitable for further use, e.g. to 15,000km (9,320 miles)? Strangely, the viscosity is higher than the starting 14.0. Why is this so?
Appreciate all your expert opinion and comment.