Another vote here for "keep spare filters on you". We sell the stuff that's commercially made and I always tell our new customers - and those that have run their car on petrodiesel for a long time - about the possibility of clogging filters. Not a big deal but it's something to watch for during the first thousand miles or so.

I've been running it for 7 months straight in my wagon (which was purchased from a guy who ran WVO for a couple years, then switch to petrodiesel for a year before I bought it when he couldn't get anymore WVO). Filters clogged after a couple weeks, serious power loss blah blah. Changed filters and haven't had a problem since. I've changed a single plastic filter in the interim but that wasn't really necessary.

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1984 300TD Turbodiesel - 272k
- Daily Duty
1985 300D Turbodiesel - 315k
- "Recommended for competition events only"