Quote Originally Posted by inair View Post
Sorry didn't mean to imply that you should run it in gear. My prop turns slowly and makes a growling noise while in neutral. I don't know how fast it might turn at 2500 rpm.
the growling is the shaft rubbing on the strut bushing. it's made of hard rubber and wants water as a lubricant. soapy water will last longer if you need to run it longer.

my prop doesn't spin out of gear either.