My rear wiper motor was leaking like they all do eventually, it was starting to freeze up slightly too, so I set about seeing if I could fix it instead of forking out for a new one. here we have one leaky motor. I then stripped it down to its components. went outside and got a bucket of spirits and a bucket of screwfix degreaser to wash the spirits off, soaked all the real mucky parts in the white spirits to clean out the rusty crud as best as I could. looked at the best way to cure the leak and I found an O-ring to go round the spindle and hopefully create a seal stopping the leak into the housing. Started to assemble the motor back together, with a nice helping of grease. Back in the car, used nearly half my washer bottle through it, and the leak seems to have been cured, I have a better flow of screen wash and the motor is running quicker. now I have the Octavia one to try and do, that’s currently seized solid but they are fairly simple in their design, so I may be able to salvage it. I can’t recall the O-ring I used but it came out of a selection box from tool station if that helps.