See the pdf (pg 26) that miles posted on the other
one way bearing thread.
LUBRICATION
Oil is the preferred lubricant, as it minimizes wear and heat generation.
For those applications where oil is not practical, clutches are packed with
a soft grease containing mineral oil. Thick grease will retard roller
engagement and can cause individual rollers to slip, possibly overloading
any engaged rollers.
Bubba