Oil Leak Troubleshooting

[jerbo]

i see in this discussion of the oil return pipe chat about a 'copper' washer. When i bought out an old Model A repair garage years ago i found lots of white fiber type washers that went between the return pipe & the block. No metal [copper or brass] ones at all. Looking at Snyder's latest catalog, page A-131 i see them selling: "Pair of hard fiber gaskets...as originally used...usa" part # A-6648 $2.50. I have never had nor seen any Model A with metal 'washers' or gaskets in this place, maybe not using the original fiber means it will leak ?? I've never used metal ones, never used any kind of 'sealer' just the plain old fiber washer..... Jerbo