yellow oil substance inside bottom of kegerator!?!?

[hungry4hops]

Ok so I just disassembled my nostalgia kegerator to move co2 outside and add nitrogen. When I got it all a part I noticed the yellow ath the bottom back wall. At first I thought it was beer put my finger in it and it seems to be some sort of oil. My question is should I not do any modifications because it might be on its way out. Everything seems to be working fine, should I be concerned?
Thanks here's some pics, let me know what you guys think

 

[Stealthcruiser]

Does it still chill?

If it was refrigerant oil, there would be no mo chillin'!

 

[hungry4hops]

Yeah it seems to be working just fine. I'm going ahead with the install fingers crossed it was nothing! Eek

 

[krazydave]

I've seen that same stuff in a few refrigerators also. No idea what it is, but most of those refrigerators have been running for years without any issue.

 

[dyqik]

I've seen it before, in back of general purpose fridges in shared houses. I think it's a mold/bacteria that tends to grow on wet liquids with some nutrients in them. It's at the point that any spills would tend to gather.

 

[Stealthcruiser]

Taste it, and get back to us...........