My take is that two drops in a thousand rounds probably isn't going to do much damage, if any. But that's chamber oil, not spring oil, 3-N-One oil, WD40, etc. Chamber oil ought to be non-combustible like silicone oil. One problem might be putting in too much and then shooting immediately afterwards, thereby creating a slight hydraulic lock which can damage the seal. Or it could make the oil very hot. You know, it seems like even the internet blog gurus still advise this treatment. FWIW, if and when you ever tune your Air Hawk, just apply some good JM moly paste to the piston and you won't have to worry about it.