I've coated my valves with grease, it leaves a film of grease in the bore when,June 9 2012 at 6:58 AM
Crosman Forum Member
from IP address 188.8.131.52
Response to 392 valve observation
the valve is pushed in, I think that grease is then pushed into the valve by the piston, if air can't pass the o-ring grease should not be able to either?