AMD Heat sink installation guide click here(2502)
AMD general installation guide click here^1039^1065,00.html
AMD state NEVER EVER USE GREASE (except for short periods of CPU testing). It is NOT effective long-term
Do you mean Thermal Paste? Arctic Silver is highly recommended.
How to remove and replace Thermal Pad click here
All AMD CPUs should have 4 pads to make sure that the heatsink is correctly installed. You can buy a shim for extra protection. Do a google search for "CPU Shims" (using the " "). Most stockists are US based but there is at least one UK stockist.