Let me start by saying that I'm on a work computer which limits what and how I post here. Hence, the formatting which may not conform to BITOG standards.
My first post here at BITOG in about 8 years. I appreciate any feedback you folks can give me on this first sample of my new-to-me Lexus with 122,000kms (80k miles or so). Prior to my QS oil change, this car was serviced at Lexus with Toyota 5W20 oil since delivery by the previous owner.
I put 6000 miles on this oil. What concerns me is the Sodium number. There is no obvious signs of internal coolant issue on the car (sludge, smoke etc). There IS a significant coolant leak at the water pump which I'm repairing later this week. Also, I did add 3 qts of top-up oil during the 6k miles. Keep in mind that this vehicle has a 9.1 qt sump.
Code:
We're not seeing any mechanical factors for the oil loss here, but remember: make-up oil can dilute the oil and that might be hiding a mechanical problem if one exists. Assuming that's not the case though (because metals do look good).
Sodium was a bit elevated and it a marker for coolant, but it's probably just residual additive from a previous oil. No fuel or moisture was found. We're not entirely sure where the oil's going. Any smoke from the exhaust or spots on the ground?
Unit/Location Avg Universal Averages
ALUMINUM 3 3
CHROMIUM 0 0
IRON 9 7
COPPER 1 2
LEAD 0 0
TIN 0 0
MOLYBDENUM 159 115
NICKEL 0 0
MANGANESE 0 1
SILVER 0 0
TITANIUM 4 1
POTASSIUM 6 2
BORON 18 25
SILICON 7 14
SODIUM 85 54
CALCIUM 2171 2124
MAGNESIUM 9 161
PHOSPHORUS 7 679
ZINC 38 809
BARIUM 0 0
Values
Should Be*
SUS Viscosity @ 210°F 51.6 46-57
cSt Viscosity @ 100°C 7.7 6.0-9.7
Flashpoint in °F 430 >355
Fuel %
Antifreeze % 0 0
Water % 0
Insolubles % .2
My first post here at BITOG in about 8 years. I appreciate any feedback you folks can give me on this first sample of my new-to-me Lexus with 122,000kms (80k miles or so). Prior to my QS oil change, this car was serviced at Lexus with Toyota 5W20 oil since delivery by the previous owner.
I put 6000 miles on this oil. What concerns me is the Sodium number. There is no obvious signs of internal coolant issue on the car (sludge, smoke etc). There IS a significant coolant leak at the water pump which I'm repairing later this week. Also, I did add 3 qts of top-up oil during the 6k miles. Keep in mind that this vehicle has a 9.1 qt sump.
Code:
We're not seeing any mechanical factors for the oil loss here, but remember: make-up oil can dilute the oil and that might be hiding a mechanical problem if one exists. Assuming that's not the case though (because metals do look good).
Sodium was a bit elevated and it a marker for coolant, but it's probably just residual additive from a previous oil. No fuel or moisture was found. We're not entirely sure where the oil's going. Any smoke from the exhaust or spots on the ground?
Unit/Location Avg Universal Averages
ALUMINUM 3 3
CHROMIUM 0 0
IRON 9 7
COPPER 1 2
LEAD 0 0
TIN 0 0
MOLYBDENUM 159 115
NICKEL 0 0
MANGANESE 0 1
SILVER 0 0
TITANIUM 4 1
POTASSIUM 6 2
BORON 18 25
SILICON 7 14
SODIUM 85 54
CALCIUM 2171 2124
MAGNESIUM 9 161
PHOSPHORUS 7 679
ZINC 38 809
BARIUM 0 0
Values
Should Be*
SUS Viscosity @ 210°F 51.6 46-57
cSt Viscosity @ 100°C 7.7 6.0-9.7
Flashpoint in °F 430 >355
Fuel %
Antifreeze % 0 0
Water % 0
Insolubles % .2