I'm telling y'all, you just need to get some MIL-SPEC cable! What size OCP are we talking about? LSTSGU-9 or so would probably work here. The jacket is waterproof, oil-proof and good to well past the boiling point of water. You can get it armored, too, if you want. (I *think* it's tested for immersion in 400°C oil, but I can't find the test docs at the moment to verify that.)

http://www.generalcable.com/NR/rdonlyres/8044A740-8883-4F96-B4E5-50B6C4038960/0/M 24643_16.pdf

This stuff is ubiquitous on ships; they use it for power (no conduits either) to the complete exclusion of pretty much everything else.
[This message has been edited by SteveFehr (edited 10-13-2006).]

[This message has been edited by SteveFehr (edited 10-13-2006).]