STOP!!!
Using any oil not specifically made for spring powered air rifles to lube the piston can damage the gun beyond repair.
Too much oil of any kind in the compression chamber will cause dieseling, which can by it self in extreme cases damage the piston, the seals, and has even contributed to swollen compression chambers, and broken main springs.
Pneumatic oil is acceptable in CO2, and similar air rifles, but not springers.
Use a high quality, extreme temprature moly grease on the piston and mainspring. The bore can be wiped with the pneumatic oil, but must be dried before firing, and do not allow any to enter the compression chamber. A good gun oil can be used on all joints and the exterior. The gun oil should also be kept out of the compression chamber, as well as away from all seals.