Reddit reviews Crosman 241 Pellgunoil Air Gun Lubricating Oil (.25-ounce)
We found 2 Reddit comments about Crosman 241 Pellgunoil Air Gun Lubricating Oil (.25-ounce). Here are the top ones, ranked by their Reddit score.
FOR USE WITH CO2 AND PNEUMATIC PUMP AIR GUNSPREVENTS RUSTING AND KEEPS SEALS FROM DRYING OUT - See operating instructions in your air gun user manual"TAKE IT OUTSIDE" with CrosmanMADE IN THE USAPrevents rusting and drying of sealsFor use with CO2 and pneumatic pump gunsNot for use on break barrel pellet guns
You may have a blown seal or stuck valve.
So, I would try one of the lubricating cartridges and see if that fixes it. If not you'd have to take it apart and see what's happening. I have only seen this happen to guns that are not routinely maintained (other than defective). The third option is that it's a lower end Umarex, and they definitely break/malfunction sometimes.
EDIT: They sell Crosman Pellgunoil at Walmart. You will probably need to buy the lubrication cartridges online.
Pellgunoil
Cartridges
https://www.amazon.com/Crosman-Pellgunoil-Air-Lubricating-ounces/dp/B0002IL6M6/ref=sr_1_1?ie=UTF8&qid=1549577758&sr=8-1&keywords=pellgun+oil