I agree with "check with the dealer" but as a side note, many Vdrives use a separate oil
sump for the actual Vdrive portion of the unit. The transmission
may take ATF, but the Vdrive portion probably takes motor oil
or heavier trans oil. Check the levels of both in your new (to you) boat. Buy or download any information that you can find on the unit, and keep it available. Just my 2 cents worth. ____Grant.