Valvoline is good oil. I didn't know they made a marine gear lube.
Ayuh,.... Though it don't say Marine on the bottle, I use Valvoline 75W-90 Syn-oil, or Mobil 1, 75W-90 syn-oil in all my drives,....
Same as the Good Merc stuff, without the dye added,.....
Golden amber color,...
Water shows up as cloudy milky streaks if present,....