I would refrain from using oil other than Crosman Pellgunoil on my 760. 3n1 and WD40 are not designed for air rifles and may actually damage the seals. Pellgunoil is designed for Air guns. Follow the recommended locations per the manual. (If you lost the manual Crosman.com has them online.) On your airguns, that use C02, put a drop of Pellgunoil on the end of the C02 bottle before you install it .This will lubricate the system from within
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