Recommended Thermal Grease Using on SNK-P0080AP4
https://www.dow.com/en-us/pdp.dowsil-tc-5888-thermally-conductive-compound.04124778z.html#overview

Once SNK-P0080AP4 is installed on a CPU, the thermal grease can maintain its performance during the system life cycle.
It cannot be reused once the thermal grease is used (i.e. SNK-P0080AP4 has been installed on a CPU).
If SNK-P0080AP4 is installed and then uninstalled on a CPU, the used/residual thermal grease on both SNK-P0080AP4 and CPU IHS must be wiped up completely before the new/fresh thermal grease is applied to the CPU IHS.