So my past UOA showed a 4% fuel dilution @ 9800miles - LINK TO OLD ANALYSIS
This latest UOA shows a 4.8% fuel dilution @ 5400 miles.. Sent the oil to Polaris Labs this time so it's accurate.
Do you guys think the high dilution could be caused by a heavy throttle and occasional idling (5-10mins a few times a week)? Or is there a good chance a component has gone bad?
The car has been driving in very cold temperatures the last 4 months (down to -22F/-30C).
I wanted to see if I could come close to M1's 20,000mile interval but it looks like any extended interval, is NOT for this engine.
Oil Used: Mobil 1 AP 0W20
# of miles on oil: 5,400
# of months oil was used: 4 months
# of miles on the car: 47,845
Air Filter: OEM
Oil Filter: Mobil 1 Extended
Code
Wear Metals (ppm)
Iron (Fe) 8
Chromium (Cr) 0
Lead (Pb) 0
Copper (Cu) 0
Tin (Sn) 0
Aluminium (Al) 5
Nickel (Ni) 0
Silver (Ag) 0
Vanadium (V) 0
Contaminant Metals (ppm)
Silicon 20
Sodium 3
Potassium 0
Multi-Source Metals (ppm)
Molybdenum 48
Antimony 0
Manganese 0
Lithium 0
Boron 44
Additive Metals (ppm)
Magnesium 199
Calcium 1380
Barium 0
Phosphorus 580
Zinc 683
Contaminants
Fuel Dilution 4.8%
Soot
Water
Fluid Properties
Viscosity 100C: 6.9 cSt
Base No. 2.16 mg KOH/g
Oxidation 14 abs/cm
Nitration 12 abs/0.1mm
This latest UOA shows a 4.8% fuel dilution @ 5400 miles.. Sent the oil to Polaris Labs this time so it's accurate.
Do you guys think the high dilution could be caused by a heavy throttle and occasional idling (5-10mins a few times a week)? Or is there a good chance a component has gone bad?
The car has been driving in very cold temperatures the last 4 months (down to -22F/-30C).
I wanted to see if I could come close to M1's 20,000mile interval but it looks like any extended interval, is NOT for this engine.
Oil Used: Mobil 1 AP 0W20
# of miles on oil: 5,400
# of months oil was used: 4 months
# of miles on the car: 47,845
Air Filter: OEM
Oil Filter: Mobil 1 Extended
Code
Wear Metals (ppm)
Iron (Fe) 8
Chromium (Cr) 0
Lead (Pb) 0
Copper (Cu) 0
Tin (Sn) 0
Aluminium (Al) 5
Nickel (Ni) 0
Silver (Ag) 0
Vanadium (V) 0
Contaminant Metals (ppm)
Silicon 20
Sodium 3
Potassium 0
Multi-Source Metals (ppm)
Molybdenum 48
Antimony 0
Manganese 0
Lithium 0
Boron 44
Additive Metals (ppm)
Magnesium 199
Calcium 1380
Barium 0
Phosphorus 580
Zinc 683
Contaminants
Fuel Dilution 4.8%
Soot
Water
Fluid Properties
Viscosity 100C: 6.9 cSt
Base No. 2.16 mg KOH/g
Oxidation 14 abs/cm
Nitration 12 abs/0.1mm
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