Hi everyone,
I had a UOA done recently and not overly happy with the results.
I am not expert but it seems lead and iron are high,
Silicone is high (poor air filter?)
And fuel dilution is a minimum of 3% as that is the upper range the machine shows.
I am hoping that with the fuel dilution and silicone levels fixed then the metal wear particles will go down too?
TBN seems really good so potentially the OCI can be extended by a fair bit I would assume.
Molybdenum is lower than I'd hope, perhaps an additive like MoS2 would help?
Car: 2003 Mitsubishi Diamante
Engine: 6G74 3.5L V6
Miles on engine: 155,000
Miles on oil: 6,817
Oil: Shell Helix Ultra 5W40 (I am in Australia in case that makes a difference on the blend)
Driving type: Most is city driving with a few long trips but very few 1-2 mile trips (most about the 8-10 mile distance). It has about 600 miles of towing 3,500lbs too.
Code
Lead 42
Iron 13
Aluminum 3
Copper 6
Chromium 1
Tin 2
Nickel 0
Silicon 39
Sodium 4
Magnesium 13
Zinc 851
Molybdenum 41
Calcium 2117
Phosphorus 747
Boron 68
TBN 10.3
Soot 3
Glycol 0
Fuel Dilution 3% min
Oxidation 11
Nitration 0
Sulphation 14
TAN 0
f.debrus (mg fe/l) 5
Viscosity @100 C 13
Viscosity @40 C 92
I had a UOA done recently and not overly happy with the results.
I am not expert but it seems lead and iron are high,
Silicone is high (poor air filter?)
And fuel dilution is a minimum of 3% as that is the upper range the machine shows.
I am hoping that with the fuel dilution and silicone levels fixed then the metal wear particles will go down too?
TBN seems really good so potentially the OCI can be extended by a fair bit I would assume.
Molybdenum is lower than I'd hope, perhaps an additive like MoS2 would help?
Car: 2003 Mitsubishi Diamante
Engine: 6G74 3.5L V6
Miles on engine: 155,000
Miles on oil: 6,817
Oil: Shell Helix Ultra 5W40 (I am in Australia in case that makes a difference on the blend)
Driving type: Most is city driving with a few long trips but very few 1-2 mile trips (most about the 8-10 mile distance). It has about 600 miles of towing 3,500lbs too.
Code
Lead 42
Iron 13
Aluminum 3
Copper 6
Chromium 1
Tin 2
Nickel 0
Silicon 39
Sodium 4
Magnesium 13
Zinc 851
Molybdenum 41
Calcium 2117
Phosphorus 747
Boron 68
TBN 10.3
Soot 3
Glycol 0
Fuel Dilution 3% min
Oxidation 11
Nitration 0
Sulphation 14
TAN 0
f.debrus (mg fe/l) 5
Viscosity @100 C 13
Viscosity @40 C 92