I know of one Morgan owner who has cut a small hole in the top of the bulkhead to facilitate the business of getting a 6mm bore tube down into the gearbox. I have owned my 4/4 with Type 9 box for 15 years, and in that time I have changed the oil 4 times, the most recently being about 3 years ago when I had a new gearbox fitted. The first time I did it the condition of the oil was appalling, but the car had done 50k miles before I ever got to it. I suspect the oil hadn't ever been changed before.
It's on my list to do this summer (much easier when the ambient temperatures are high). I have used a manual pump in the past, this time I intend to use an electric pump of some description.
