Glad you got it sorted out and for your sake I hope the dealer has been truthful with you with regards to the problem and not just applying a band aid fix on it.
Sorry if I sound like a pessimist but u may want to consider getting rid of it while u still have a working CVT box. I only say that because I don't want to be the one who posts "I told you so" 6 to 12 mths down the track.
DOn't get me wrong, I have nothing against CVTs as I just sold one of my V35s and am now driving a Merc with CVT and loving it. Its the lack of support and extreme costs to repair & service in your case with the CVT8 that turns me off completely.
If you are looking for the CVT oil, do a search, been discussed many times and costs as well...hope you have deep pockets though.