Will co2 guns leak down over time if not used?

I have 2 Co2 powered crosman pistols. I always use one drop of pellgun oil on each cart as recommended. I have left them for months with a partially filled cartridge without any ill consequences.

Where are you putting the drop of oil? I left a CO2 in one and it drained out.


One drop of oil on the tip of every new co2 cartridge (every-time per Mfg.) It also lubes all internal parts every shot.Over 6,000 BBs through this w/in the last year,w/o one misfire or jam :) At 30 BBs per second there's no room for error.
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