It's been a while but I thought I'd drop by to get some comments. I was going to do yearly OCI but I installed some big ol' smoky injectors
and I was afraid soot would get too high in a year. This oil was run for 6 months/7500 miles and had one quart of Pennzoil Long-Life 15W-40 added near the end. Lab was Predictive Maintenance Services.
I think yearly changes with Mobil 1 T&S/Delvac 1 would be OK. I thought soot would be a lot higher.code:
Iron 60
Chromium 12
Lead 2
Copper 6
Tin 0
Aluminum 7
Nickel 0
Silver 0
Silicon 14
Boron 16
Sodium 22
Potassium 7
Magnesium 128
Calcium 2880
Phosphorus 1410
Zinc 1825
Mloybdenum 12
Fuel
Water
Viscosity 13.9 @ 100c cST
TBN 7.5
Soot 0.4
Oxidation 14.0
Nitration 8.0