Originally Posted by 360view
I was told:
“never use one of these Ingersol Rand air impact guns without first squirting Marvel Mystery Oil in the air quick connector.”
It worked “Marvelously” for that.

Now that is a use I will follow. I have always used "air tool oil" for that. But when my little bottle (with drop stem) is empty, I will refill it with MMO.
When I was running Alky injection, I stored the pump during winter by filling it with MMO and putting the pump in a zip lock bag.
It helped keep the pump seal from shrinking (drying out).

1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1