My samples were used veggie oil straight from the waste bin. No filtering or anything.

I was thinking about the best way to settle out used veggie oil before I filter it.

It appears that when cold/cool the most stuff falls to the bottom. Heat/sun seems to make the crap rise up though the "cleaner" oil.

I wonder if this cycle repeats daily, does the top oil get cleaner each additional cycle? Or does the crap at the bottom mix the same every day with the sun?

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1987 300TDT
1981 VW MKI Caddy 1.6 diesel, waiting on engine swap
1983 D-50 Power Ram 4x4 "Mitsubishi" 2.3 turbo diesel
assorted gas powered crap and motorcycles

RIP: 1984 300TDT, 1982 300TDT, 1984 190D 2.2, 1992 300D 2.5, 1987 300TDT, 1982 Maxima LD28, 1983 Maxima LD28, Isuzu C223 P'ups X3, 1983 Holiday Rambler 6.2 Banks turbo diesel, 1984 Winnebago LeSharo 2.1 TD, 1985 Allegro 6.5