11-19-2009, 01:58 PM
I took an oil sample last week and sent it to blackstone labs but I don't know what to look for so somebody who knows what they're talking about tell me if this is good or bad. I attached the report below. It says they found high aluminum, copper, and iron readings and that alot of towing could cause this but i haven't towed anything or worked the truck hard at all during this period. Thanks for the help, Matt
12-10-2009, 03:55 AM
Matt, Don't let this initial report scare you too much. Below is a chart showing the acceptable/normal wear metals for a diesel motor. Yes, Iron is elevated but not out of the normal range since under 100 ppm is considerd normal and Navistar considers 200 ppm normal for the Ford Chasis 7.3L.
But a very good UOA report for the 7.3L ussually shows Iron around 20-30 ppm. The one item that I would bring up is the viscosity. Your sample shows the viscosity at the low end of a 40 weight oil, just about to shear down to a 30 weight. The CST viscosity @100 for a 40 weight oil runs from 12.5-16.29 and your sample read at 12.94. Good time for an oil change.
Silicon was low at 11 ppm, so your air filtration system is doing a good job - which system are you using? Aluminum and copper are a bit elevated but still within normal limits.
I'll PM you my number if you want to go over you UOA in more detail - I can't type that fast.........:doh: