Sorry for taking so long to respond, but I'm still a little confused.
As for the ATF in the oil (to supposedly break up deposits) how bad would such a small amount of ATF (for 1 liter of the oil+ATF) make? Also, would it even work as advertised? I'd rather use Synthetic if it does the same obviously, just wondering.

Also, This is my second OM617, and I don't find nearly the same amount of variation on my other engine.. I mean, the oil level is at LEAST 6 inches above the line whenever I check it within one minute of turning it off, whereas it is just a little above on my other engine. I was mainly wondering if these massive variations were normal, or a bad sign.