I have a '93 Bowrider with a 4.3 Vortec, Merc. ALFA ONE. It's been
sitting for 3 years.

The pump is full of fluid; however, the fluid looks like milk. Do I need
to change the fluid? (I'm sure it needs it) The pump makes no noise at
all when engine is running. Possible pump failure?
Advice/opinions??!!
Thanks in advance.