Bad You,
You do NOT ever return oil that has landed in a container to a non-filtered Type 1 engine. The drained oil was returned to an AutoZone via a Castrol gallon container, thank-you VERY MUCH. At no time did I consider returning the drained oil back into the engine due to unknown contamination in my drain container out there in the desert. Bad you.
Colin
(of course, if I had no other option, I was ready to filter it through a roll of paper towels stuffed in a cut up upside-down gallon water jug)