Look, I realize this is a ridiculously simplistic question, and that it's ridiculous that I'm asking this question on year 13 of running my 6/1, but as I did a mid-winter oil change this week, I realized that I was just eyeballing the amount of old oil that came out and putting the same amount back in...
which means I am simply matching my own previous non-knowledgeable moves. I once put X in, and now I'm just replacing X. (which seems to be about 2 quarts)
I see in the old manual it says 'add oil to within an inch of the top of the sump'.... but experts on here must know what that translates to.
And, given this is just a 'splash' system, can one actually *over oil*? can you put too much oil in a 6/1 and negatively affect it?