Mercury - Quicksilver 8M0190469 2-4-C Marine Grease with Teflon Multi-Purpose Lubricant 14 oz 8M0190469. Overview. Anyone who spends real time around boats learns quickly that smooth operation isn't just about horsepower or hull design-it's also about the little things staying moving, protected, and quiet. A steering cable that slides instead of sticking. A hinge that swings instead of groaning. Those subtle details matter, especially when you're miles from the ramp and relying on your gear to w