For some reason I find that odd with your background that you don't run any additive at all.
I run stanadyne in our VW year round. Changed a couple of the dual filters on fords and they had what appeared to be ice crystals in the filters and one of them had more water. In it than diesel it appeared
The farm diesel mechanics around here suggested stanadyne as many of the other ones I guess use up 77% diesel in the mix and supposedly stanadyne doesn't .
Something tells me though as knowledgeable as you are Shawn you must know something more on this?