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5110 Days of genuine trouble-free motoring on veg oil from 18th June 2008 to 16th June 2022 - read more

An Easy Way To Filter WVO

I get lots of people writing to me saying things like, "You're set up is okay, but is there anything easier?" Well yes, there is - IF YOU COLLECT YOUR WASTE VEGETABLE OIL IN CUBIES check out this YouTube Video...

Filtering WVO - the REALLY EASY Cubie Method

What's a cubie? One of those large semi-transparent plastic containers - roughly cube shaped. If you're not lucky enough to collect your Waste Vegetable Oil in a cubie, sorry, stick with one of the other systems I describe. But if you do, this page is for you.

If you're lucy enough to be able to take advantage of this method, do check out the video for helpful tips and a handy animation.

Filtering WVO The Really Easy Way


  • A large barrel / container, with an outlet (tap / faucet) a few inches above the bottom of the base.
  • Three filter socks - one x 25 micron, one x 5 micron, one x 1 micron.
  • A clean, empty container (a large bucket will do).
  • A course filter medium - nothing too fine. Something that would strain tea or sieve flour would be perfect.


Collect your WVO cubies until you have a reasonable quantity. Let them sit unmolested for a couple of weeks. Do NOT place them in sunlight and ideally keep them somewhere away from the elements. Let the WVO settle until you can clearly see a fatty layer at the bottom of the cubie.

WVO SettlingCollect containers. Let them sit a while and settle. Then poke a small hole in the container half an inch above the sludge and drain out the cleaner stuff.
WVO SettlingThe oil will drip out rather than spurt out, Use duct tape to create a drip edge along the bottom of the container.

Getting Started... Day 1

Without agitating, place a Cubie on the edge of a sturdy table or bench. Poke a small hole an inch or so above the fatty debris and let the oil drip down through your sieve / mesh, into a clean container. The mesh should be fine enough to catch crumbs, bits, batter, etc, but not so fine as it slows the flow of oil. This may 3 or four minutes to set in motion. Now walk away - job done.

Day 2

Suspend your filter socks, one inside the other, above a suitable storage barrel using the handles attached. Empty the oil that dripped into your container from (from Day 1) into the socks, allowing the oil to pass through the socks into the barrel. Then take another wvo container, poke a hole and let it drain into the now empty container as you did on Day 1. Now walk away - job done. That took maybe four or fives minutes

Create A Routine

That's it. Easy or what? You'll quickly adapt and learn a routine. The trick is NOT to rush the beginning. The temptation is to take your first container and pour it into your car. Never do that! Be patient, invest a few weeks at the beginning whilst still running on diesel, then with a good routine that takes less than five minutes each day you can always have good clean oil on standby.

Does It Work?

You might not believe me, but this method really does work. The fats, debris and water settle at the bottom of the Cubie. If you leave them there by not agitating the content, and if you remove the cleaner oil above and pass this through a quality filter sock, then you achieve finely filtered, fat, debris and water free oil.

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