Ok , my IIa had a pipe at the back of the head which was a return to the sump for the oil.....
I have a compressor from a 101 Ambi which is sat in't garage sort of saying "fit me on the 110!". It needs an oil feed and I guess the return would be fine but does it exist on a TD lump, or is there a feed I can T in to anywhere? It's only a thin pipe.
Lee D