Ok...here we go.

Marvel Mystery Oil (henceforth known as MMO) does not have the rust inhibiting qualities of a good AIR TOOL oil.

It is the consensus of the RCU membership that MM air tool O (MMATO) be used (if using M&M).

MMO will gum things up, MMATO will not.

MMATO can be found at some auto parts stores.

It is my opinion to ALWAYS use some CASTOR oil unless you are an expert engine tuner with plenty of money and a perverse adversion to said oil.

There.