I actually ADD water to my WVO in a mistwash fashion. This is to help junk settle out as well as to neutralize any acids or caustic grill cleaners that may be in the WVO.

After I allow a few days for the water to settle to the bottom of the WVO, I drain the water and junk off. I then heat the oil and let it settle for weeks. Leaving the bottom 8" behind, I pump the oil cold through my filters into a second drum where it gets heated again and once again allowed to settle for weeks.

I do have water seperating filters on the filter station as well as both vehicles, but I think I have them there more for peace of mind or a safety net.

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Pictures of the MB: http://s230.photobucket.com/albums/ee41/EricandRobyn/1981%20Mercedes/

1981 300 SD with a Goldenrod water block and Injetor line heaters. EGR is missing

1999 F-350 with HP X-over, Dahl 100 Fuel Filter, Coolant by-pass filter, CCV mod, Tymar intake.

Both on single tank WVO blend