You don't have to re oil the finish, but you can buff it occasionally.
Your has a polymerized oil finish, then buffed with wax. It should not be cleaned with guitar polish or furniture polish. To clean it and buff it up, a new layer of way should be applied.
We recommend:
http://www.woodfinishsupply.com/RenWax.html (the small 65mL tin should be fine for you)
Apply with a clean paper towel - we use Bounty or Viva (some brands are too rough) - or clean soft cotton cloth (like an old t-shirt).
Spread the wax out thin over the whole surface of the bass except the fingerboard. Try to keep the wax off the fingerboard so it doesn't get your strings dirty.
Let the wax dry 5-15 minutes, then buff with a separate clean paper towel or soft cloth. To do a really careful job, you can remove the strings and
knobs since these are a little difficult to buff around.
Hope this helps. Write or call if you have any other questions
