Truffle oil makes a great contact enhancer, or so Im told.Mmm, doubt it. Truffles are fungi and do not contain oil. Truffle oil is made from soaking chopped up truffle bits (the tough, not edible parts) which extracts the volatile elements containing truffle flavor and aroma (mostly the latter).
The conductivity of truffle oil would depend on what type of oil was used for a base. Considering that most oils and NOT good conductors and plant and nut oils have especially low conductivity, I would guess that truffle oil would not make a good contact enhancer. But I have not tried it so this is just an uneducated guess.