I always change the sail drive oil during the annual haulout. For various reasons, this year I will be unable to get a haulout before heading off on an extended trip. I can get a diver to change the zinc and give the bottom a scrub, but am wondering if anyone has removed the sail drive oil via the filler hole? Any advice out there? (2003 Bav 36 with the Volvo MD20-30 engine.)
Thanks,
Bob