My first post, so excuse me if I am lacking required information.
This sample was taken from a rebuilt Subaru EJ257, which suffered from a piston ringland failure. The block halves were re-used, but pistons, rods, crank, bearings, etc. were all replaced with new parts. Oil change intervals used to date are 150, 500, 800, 1700, and 3100 miles. Oil used for all changes were Royal Purple 10w-30 break-in, with a Purolator PureONE (PL14460) oil filter. The car is a daily driver, with no track time on the rebuilt engine.
The first analysis showed no alarming data, but the second analysis to date showed elevated levels of lead. Is this cause for concern? Are bearings showing greater than normal wear for an engine with this many miles, or is this still residual from the engine breaking in? Will I notice the lead content drop after I switch to Rotella T6 5w-40?
Thanks
Html:
MI/HR on Oil 1,450 1,000
MI/HR on Unit 3,160 2,025
Sample Date 09/18/14 08/17/14
ALUMINUM 2 3
CHROMIUM 0 0
IRON 5 6
COPPER 6 6
LEAD 6 4
TIN 0 0
MOLYBDENUM 0 1
NICKEL 0 1
MANGANESE 0 0
SILVER 0 0
TITANIUM 0 0
POTASSIUM 1 0
BORON 2 2
SILICON 9 10
SODIUM 15 13
CALCIUM 2562 2432
MAGNESIUM 489 461
PHOSPHORUS 900 875
ZINC 1075 1035
BARIUM 0 0
Values
Should Be*
SUS Viscosity @ 210°F 60.7 58-65 61.1
cSt Viscosity @ 100°C 10.42 9.7-11.9 10.54
Flashpoint in °F 385 >375 400
Fuel %
Antifreeze % 0.0 0.0 0.0
Water % 0.0
Insolubles % TR
TBN
TAN
ISO Code
This sample was taken from a rebuilt Subaru EJ257, which suffered from a piston ringland failure. The block halves were re-used, but pistons, rods, crank, bearings, etc. were all replaced with new parts. Oil change intervals used to date are 150, 500, 800, 1700, and 3100 miles. Oil used for all changes were Royal Purple 10w-30 break-in, with a Purolator PureONE (PL14460) oil filter. The car is a daily driver, with no track time on the rebuilt engine.
The first analysis showed no alarming data, but the second analysis to date showed elevated levels of lead. Is this cause for concern? Are bearings showing greater than normal wear for an engine with this many miles, or is this still residual from the engine breaking in? Will I notice the lead content drop after I switch to Rotella T6 5w-40?
Thanks
Html:
MI/HR on Oil 1,450 1,000
MI/HR on Unit 3,160 2,025
Sample Date 09/18/14 08/17/14
ALUMINUM 2 3
CHROMIUM 0 0
IRON 5 6
COPPER 6 6
LEAD 6 4
TIN 0 0
MOLYBDENUM 0 1
NICKEL 0 1
MANGANESE 0 0
SILVER 0 0
TITANIUM 0 0
POTASSIUM 1 0
BORON 2 2
SILICON 9 10
SODIUM 15 13
CALCIUM 2562 2432
MAGNESIUM 489 461
PHOSPHORUS 900 875
ZINC 1075 1035
BARIUM 0 0
Values
Should Be*
SUS Viscosity @ 210°F 60.7 58-65 61.1
cSt Viscosity @ 100°C 10.42 9.7-11.9 10.54
Flashpoint in °F 385 >375 400
Fuel %
Antifreeze % 0.0 0.0 0.0
Water % 0.0
Insolubles % TR
TBN
TAN
ISO Code