AVGAS used to flush crankcase at oil change?

[PT20J]

11 minutes ago, Will.iam said:

Blackstone lab knows when you use or suspects when MMO is used as the viscosity of the oil is lower than what’s normal. That’s why tgere is a section on the form for listing additives and how much you put in so they can account for the lower viscosity value. Blackstone labs could also tell when i started running lean of peak ops as there was lower fuel  contaminants and when i started running a dehumidifier they noted i had little to no water in my oil samples and asked me what i was doing differently to account for the change. 

Interesting. My Blackstone analysis always comes back with 0.0 water and <0.5 fuel (except for once it was 1.0 fuel). I'm not running an dehumidifier and I use Camguard but have not used MMO. Mostly LOP down low and peak up higher. 

Now I'm curious what others are seeing.