Posted my first oil report here back in 2006, back again with the same car with more mods. Got my numbers back from Blackstone and just wanted confirmation as to what may be going on before I drop the car off for a rebuild.
I sent two samples in, lead was high in one of the samples (10ppm) but all other metals and oil properties were normal in both. I don't know which sample is which (had them stored in clean containers), but assume the 10ppm lead one was the 2nd.
It looks like lead is present in the larger bearings in the EJ255, which points to bearing wear. But without any iron, it seems I caught it fairly early? Not getting any audible knock or performance/fuel economy changes, and the current mods have been on the car for 5 years/40K miles.
Only thing I can think of is that perhaps my fuel pump is going/bad gas caused detonation and I hammered the rod bearing(s) and/or had a lubrication issue?
Next Steps
I haven't checked the IAM value in a very long time, so I'll be tracking down a cable and checking to make sure IAM is still 1.0. Anything else that I should check (cut oil filter at last change and it was clean) or any thoughts on what happened/how to avoid it going forward much appreciated.
Thanks!
-B
Code:
Sample Average
ALUMINUM 3 3
CHROMIUM 1 1
IRON 7 8
COPPER 9 13
LEAD 10 5
TIN 0 1
MOLYBDENUM 45 48
NICKEL 0 0
MANGANESE 0 0
SILVER 2 1
TITANIUM 0 0
POTASSIUM 2 1
BORON 30 22
SILICON 4 8
SODIUM 7 5
CALCIUM 2141 2086
MAGNESIUM 28 22
PHOSPHORUS 709 683
ZINC 895 802
BARIUM 0 0
I sent two samples in, lead was high in one of the samples (10ppm) but all other metals and oil properties were normal in both. I don't know which sample is which (had them stored in clean containers), but assume the 10ppm lead one was the 2nd.
It looks like lead is present in the larger bearings in the EJ255, which points to bearing wear. But without any iron, it seems I caught it fairly early? Not getting any audible knock or performance/fuel economy changes, and the current mods have been on the car for 5 years/40K miles.
Only thing I can think of is that perhaps my fuel pump is going/bad gas caused detonation and I hammered the rod bearing(s) and/or had a lubrication issue?
Next Steps
I haven't checked the IAM value in a very long time, so I'll be tracking down a cable and checking to make sure IAM is still 1.0. Anything else that I should check (cut oil filter at last change and it was clean) or any thoughts on what happened/how to avoid it going forward much appreciated.
Thanks!
-B
Code:
Sample Average
ALUMINUM 3 3
CHROMIUM 1 1
IRON 7 8
COPPER 9 13
LEAD 10 5
TIN 0 1
MOLYBDENUM 45 48
NICKEL 0 0
MANGANESE 0 0
SILVER 2 1
TITANIUM 0 0
POTASSIUM 2 1
BORON 30 22
SILICON 4 8
SODIUM 7 5
CALCIUM 2141 2086
MAGNESIUM 28 22
PHOSPHORUS 709 683
ZINC 895 802
BARIUM 0 0
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