I would open up the pressure tube, make sure it is degassed, and wipe out any flammable residue let it air out overnight and reassemble, use the RC 10wt or so pure silicone shock oil.
Ok. So this is the first of the "wt" I have heard. No wonder the oil would splatter all over the floor from my pump! Is 35 wt also good for something like a grease? I did get some thick stuff with one pump that I thought was in error.Wish I could get 10wt in a quart or at least 4 oz!