Still doesn't really say brand XYZ..
For wood that is not sealed with a hardening oil (tung, Tru-oil, boiled linseed and the like) the best thing I've found is mineral oil. Doesn't take much, it isn't acidic and it doesn't go rancid. Look up my Koa TL-5. I've never had anyone who has played it say anything but how good the neck felt. If too much mineral oil is left on the neck it can feel a little sticky in humid weather. If it's buffed off well it's great.
If a non-hardening oil is used on unsealed wood don't ever think about having it finished with a product that hardens.
mech
