FWIW, the Mercruiser comes in a smaller squeeze tube size for about $15.00, and I use it for the outboard's without issue.
Whatever grease you choose, I'd suggest adding a couple grams of Moly and PTFE to augment the blend. They can both be bought on Scamazon or Fleabay.
Just lubed the FD as a winter maintenance check, still clean without noticeable wear from 2 years ago.
Cheers