Mercury - Quicksilver 2-4-C Marine Grease with PTFE Multi-Purpose Lubricant 3 oz Cartridge 802861Q1. Overview. When you're out on the water, your equipment takes a beating - salt, heat, and constant movement can wear down unprotected parts fast. The Mercury Marine 802861Q1 Quicksilver 2-4-C Marine Grease with PTFE keeps everything running smoothly by forming a long-lasting barrier against friction and corrosion. This 3 oz cartridge fits most marine grease guns and is perfect for steering linkage