I have a 70 H chrysler. My prop did spin slightly when engine was in neutral. I changed oil in lower unit, and now it does not. Should it spin some or be completly still?
some will spin some will not... its kinda like Teslas invention of viscosity dynamics... Basically the top gear is moving and the viscosity of the turning gear will spin the oil which will turn the other gears... older oil will spin faster than newer thicker oil that has not broken down yet.