Don't want to start anything here, so PLEASE if you are actually using
what you are suggesting to lubricate the seals and triggers (which I am
sure everyone is) PLEASE continue to do so.
That being said, I have about 15 nail guns that see constant use. Bill
the repair guy at my fastner supplier (has been off and on for 20
years) can spot any kind of oil other than pneumatic gun oil a mile
away when the seals go. He says no motor oil of any kind, no hobby
oil, no WD 40, no 000 weight oil... nothing with any kind of solvent.
He has seen it all, and repairs guns all day long.
When we are in a pinch, he always tell me to go to the drug store and
get mineral oil. When he fills my oil bottles after servicing the guns
(and of course, my nail/brad/staple purchase) he has actually given me
mineral oil that they buy in 5 gallon barrels to give to the field
If it is benign enough to drink, it sure won't hurt those neoprene
seals. And best of all, Bill doesn't bitch at me for dissolving the
So another disclaimer before flaming and righteous indignation start:
use what you are using now in good health if it works for you. If you
only use your guns a few times a week it may not matter what you put in