The cannister drains through a small hole in the center tube, about 1/3 of the length from the top. In other words, the cannister should be about 2/3 full, not totally full. I use a turkey baster to remove the residual oil.
Kent


1937 Chevy 1/2 ton
1942 Chevy 1/2 ton
1947 Diamond T Model 509
1951 Chevy 1/2 ton
1950 Chevy COE Model 5700 ~ "Barney" ~ And more pix