Does It Matter Which Grease I Use?
Of course it does! There are many different types of grease for many different uses. Some greases are formulated for high-pressure, metal-on-metal applications (such as molybdenum grease, also called moly grease) whereas others are formulated for high speed use in... 
Grease can be thought of in terms of paint in that there are a variety of formulations that are used in various applications. You could apply latex paint to the hull of your boat and it would look very nice, however,...