No , low oil separation, high thermal conductivity, high temperature resistance, high insulation. Using scraper or other tools to smear the thermal paste onto the CPU, and it's no need to smear on heat sink. Please clean the surfaces of heat source (CPU) and dissipate heat device (heat sink) with dry tissues. Applications: CPU, GPU, MOS tube, LED light, thermostat, refrigeration film, etc. The thermal paste should be smeared evenly on the whole CPU . It can neither too thin, the printed words on it should be covered. Nor too thick, the thickness like A4 paper will be better.