Do an experiment.saefroch wrote:Not too sure about that statement, I still haven't yet re-greased my piston valve after 5 shots at 1,000psi using motor oil, and that's a lot of "wear" from airflow. I also haven't had a problem with it burning, naturally... or being absorbed into o-rings.Oxbreath wrote:I can guarantee that the silicone grease, (plumber's variety, at least), will withstand a lot more of -that-, than the motor oil, lithium, or vaseline, will, as well.
Get some plumber's silicone from Lowes.
Now smear some on a piece of PVC, and pour some of the oil on another piece of PVC.
Get out your air compressor, with the blowgun attached, and blow on each for a few minutes.
See for yourself how long it takes for each to "blow away".
And then rub your finger on each spot, when both look to have been blown away. See if one of them still feels slick...