tigeo
Autocross Champion
- Location
- Richmond, VA area
Here are all the used oil analysis data I've collected on my GSW since new. Enjoy for whatever value it brings you (or doesn't). Table and graph. In the table, orange highlighted cells weren't included in the simple stats b/c the values indicated it was still breaking in. Red cells are outside of 1 SD for the given value and "significant" to me. Green are the other way, on the "good side" by a SD. The HPL has a increased Si value new so I accounted for that by backing out some based on a new oil sample I ran. Finally, last sample was a mid-change sample as I'm running this oil until Nov/Dec.