Mercury - 2-4-C Marine Grease with PTFE Multi-Purpose Lubricant 3 oz Cartridges (3-Pack) 802861A1. Overview. Every moving part on your boat deserves the right protection, and the Mercury Marine 802861A1 Quicksilver 2-4-C Marine Grease with PTFE delivers it. This 3-pack of 3 oz cartridges fits standard grease guns and provides superior lubrication for cables, prop shafts, steering linkages, and trailer wheel bearings. It's a lithium-based, water-resistant grease that stays put, even in saltwater.