Changing oil...Let it drain overnight ?

[Paul Workman]

Well, it takes a couple minutes - filling, waiting for the oil to pass through the filter to the fill the outer side of the filter media, then keep adding a little at a time until it is practically full.

Then, I hold the filter close to the threaded center 'post'. In one clean motion I turn it over and plant it on the threaded post and spin it on. Because of the rubber diaphragm (ZR-1 filters), oil doesn't come out of the periphery holes.

Y'all do whatcha want, but with minimal effort it is really not messy at all; save for maybe a few drops. (I figure if Lotus specified filters with the diaphragm valve in them as to minimize the wear until oil pressure builds up, then pre-filling the filter has to be a good thing.)

YMMV...