Thanks for the responses, I looked at the defender website at Harken
winch grease and it said:
HarkenŽ winch grease is a non-aging, high-adhesive synthetic lubricant. It is resistant to both salt
and fresh water
and protects metal gears, roller bearings, and all moving winch parts
and wear. Note: Do not grease pawls, plastic rollers, or balls.
The spindle of my winch is plastic, so that is the reason for my concern. Lewmar winch lube does not mention anything about plastic, but it apears to be more of an oil
rather than grease.
So I am still a little confused. What Ziggy said above is my fear.