Lenovo X301 - Manual (Page 128)

Table 27. Application of the thermal grease
When installing: Before you attach the fan assembly to the computer, apply
thermal grease, at an amount of 0.2 grams, on the part marked a as in the
following figure. Either too much or too less application of grease can cause a
thermal problem due to imperfect contact with a component.
a
120 ThinkPad X301 Hardware Maintenance Manual