The issue here is getting the best information possible from successive UOAs, so as to help determine level of concern about fuel dilution.What about the oil that is left in the nooks and crannies of the engine?
I remove the oil drain pan plug and drain to one drip every thirty seconds.
This provides basis and consistency for observing trends.
Hopefully you are not suggesting any comparison between "nooks and crannies" vs fumoto valve residue.
Last edited: