[oil pan 4]

I have a 12v positive displacement marine rated gear pump I have never really used and some remote oil filter heads salvavaged from projects past.
I'm thinking about making an oil recycler with them.
This is limited use recycling, not filter it and put it back in an engine. I will take the oil, scorching hot out of the engine or while still warm out of the gear box and filter it, hot and warm oil is easier to push through a filter.
The only application I can think of where I might take the oil, filter it and put some or most of it back is gear oil for differentials and ATF used in manual transmissions. Since the oil mostly just gets dirty and it's never filtered. Some of the gear oil will be replaced, what gear oil doesn't go back in will just get used as bar and chain oil.
The rest of the oil, used motor oil, mainly 10w-30 and 10w-40, maybe some 5w-40 filter it and use it mixed with bar and chain oil.
I have to use a lot of bar and chain oil here because of the dirt and grit so I use more than 2x normal this could off set a large portion of that.
Any 0w-20, 0w-30 or 5w-20 and ATF along with real dirty black oil from my 6.5L diesel will go straight back to the oil reclaimers.
Even with oil around $50 a barrel, gear oil and bar and chain oil is still priced as if it's near $100/bbl.