Thanks makomark, I've seen pics of the tool and it has a collar with a groove to send oil to the top, same as the dizi shaft, not sure if the mechanics is the same as I didn't see the collar, anyway I now know what's needed. As regards the oil capacity, unfortunately the dipstick tube is loose in the block and can be positioned incorrectly so the mark on the gauge would also be incorrect, I am assuming however that the tube would almost touch the bottom of the pan (for sucking the oil out) so I will try and position it there, I have fitted a drain tube from the sump plug that exits through the transom drain plug to make oil change easier.