Not familiar with that particular Quicksilver grease, but down here on the Texas Gulf Coast, I use BRP Triple Guard grease on my prop shaft splines and lower unit bolts. This grease works well and provides good protection in our warm salt water conditions. Never have had a problem pulling a prop or lower unit during an annual service using Triple Guard.
Bob
1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1957 Evinrude 3022
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20
“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."