Big oil loss on rear sid

[Werner]

Good evening Model A friends,
Thank you all for the initial advice. It's a pleasure to read them.


The oil used is labeled like International SAE Class 60, or SAE 20W-50.


Since I electrically preheat the engine before every start, the thick SAE 60 isn't the cause.


The crankcase breather is free-breathing; I have the attachment with a flexible pipe at the rear.


I'll remove the oil pan and try to figure out how to remove the rear main bearing. It's unlikely to be an easy task, as I've unfortunately become a bit unfit myself.