How much oil fills the Aquabot motor?

by Naf

I have opened the drive motor because of electrical problems. I have changed the 4 diodes and everything is working. The problem that I have is that I don't know how much oil (automotive weight 30?) should I put into it (some spilled and I dont know if the whole motor should be immersed in the oil including the electronics) and the other problem is with the eelctronic board which is loose (the one that get the 24V AC and change it to DC)- should I seal it somehow? should it be immersed in the oil? What happen to the electronic boards when you turn the robot upside down?

Many thanks.