I finally got around to adding the particle counts to this chart:
I didn't have much luck finding similar data at 'Bob is the oil guy' and I think that has to do with the charter here versus there.
As MetroMPG pointed out, Ecomodder is a place for those who use empirical methods. So to report on oil additive effects, we needed:
- engine friction metric - it does no good to funk-up the oil if there is no way to tell if it had a measurable effect. I seriously think measuring idle fuel consumption when the thermostat opens is new.
- quantitive measurements - not just after the change but after a significant number of service miles to see what the carry forward and accumulated gunk did. Old Bob was good about measuring oil but his engine friction effect metrics were a little thin.
I've got a full-up account over there and may yet post a report of this work. But I'm not just interested in lubrication but whole vehicle performance. I'll have to think about it.
Bob Wilson