Just an update on the Valvoline full Synthetic racing oil I used in my Cub Cadet Lt-1046 20hp Kohler Courage V-twin.It is very smooth on this oil so far.And I might keep using it,seems to be holding up very well.
The PDF only shows 240 PPM of sodium. It doesn't show any calcium. There may be "something" that isn't listed on the PDF, but look at that TBN, ONLY 6
This is an oil for race applications and would be changed probably after each race.