....And so, onto the next problem. fired up the rocco today and then noticed a pool of oil appearing on the floor

As far as I can see it appears to be coming from the electrical connector that bolts onto the top of the oil filter housing 'cos with the rubber boot off you can see it pooling around the connector. Not had a problem like this before and does seem strange.
Would anyone happen to have a part number as the etka page doesn't seem to show a connector just a sealing plug.
This must be fate as I bought a new oil filter today.....