One of the best cleaner I've found for poly VO is

LA's Totally Awesome All-Purpose Concentrated Cleaner Refill - All-Purpose Cleaners - Dollar General

Scrape off the heavy stuff first, spray or brush some La Awesome on or soak it in a container, use a tooth brush or paint brush to re-wet it/ lightly brush every 10 min or so and the sticky VO will be totally dissolved. Awesome stuff.

I strain out the debris and re-use the used La Awesome- why pour it down the drain when it's still effective. It is also exc for degreasing an engine.

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

In My case I don't know what dried WVO looks like. But, the Typical things that a Frantze Oil Filter have been used for in the past are to Filter Engine Oil, Transmission Oil and Fuel.

I guess Biodiesel, WVO and SVO are considered Fuel and I think all of them need to be filtered when they are being processed into Fuel.

So I think it is logical to look into what is the most likley cause of the residue first.

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84 300D, 82 Volvo 244Gl Diesel

This is WVO residue





I don't care what any of you guys say, nothing will take this crap off....I tried gas, steam, denatured alcohol, acetone, soap, degreasers, oven cleaner, car wash, etc....the only thing I didn't try this on it was acid...

I still have some of this stuff, stuck to the bottom of my 78...

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Looks like that was left sitting with an empty tank for a couple of years. The way to clean that fuel strainer is scrape as much of it off first with a plastic scraper, then soak it in La Awesome with light brushing using a tooth brush. It will be like brand new when you're done.

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

Frantze toilet paper filtering WVO will be veeerrrry slow. My guess 1/2 gallon an hour. Not practical.

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

The tank screen will clean up nicely with Brake Cleaner or Simple Green. BTDT, with diesel only tank.



Why you need to scrape it off? Are you re-using the filter? With no disrespect, that will be sad.

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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

I would presume pre-filtered throug Filter Bags and the Frantz before it goes into the Tank.

Some people have pumps to move things along. I also suppose you could gravity feed through it and simply come back the next day.

I really have no idea what the residue is. Didn't have the guts to chew some and taste it

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84 300D, 82 Volvo 244Gl Diesel

That reminds me of Molasses.

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84 300D, 82 Volvo 244Gl Diesel

My 78, sat for a year with out an injection pump....The tank had 25lbs of this stuff in it....nothing remove it...wouldn't even burn off...I replaced everything with new/used from the tank to the injectors...

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I have peeled polymerized VO from the bottom of an aluminum pan that looked similar to the photos in the original post. The stuff that develops on the top of my 55 gallon plastic storage tank usually is less cloudy but that oil is pre-filtered. It also "peels" but maybe the term is relative as a putty knife was involved in both operations.

After many attempts to make Frantz filters provide the level of cleaning I want over two years' time, I have discontinued all efforts. I rely almost solely on centrifugal filtration now.

Cooljay, that residue is much darker than what I see. Source of oil, what foods have been cooked in it, how long it's used are all factors in final color.

Time is your friend when using chemicals to remove highly polymerized VO. Basic cleaners (PH>7) break down organic residue but strong bases may react with metals. General cleaners such as soaps are less effective. Soap is the end product of the base + grease reaction. A soap's strength is that it will attract grease to water, not that it will break the bond between polymerized grease and a solid.

Small sheets of polymerized VO thrown into the wood stove in winter burn nicely.

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When life gives you lemmings... make lemmingade.

You did the right thing by replacing all the parts because you did not have the correct techniques of cleaning poly-ed VO.

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

I'd bet that VO came from a Chinese restaurant that overused their oil. The dark color is mostly from Soy sauce (made from fermented black beans) and from overuse.

I am curious how you used the Frantz filter in your WVO filtration system.

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

Maybe WVO can be used te Seal Fuel Injection Pumps with leaking Delivery Valve O-rings

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84 300D, 82 Volvo 244Gl Diesel

Polishing / final filtration after centrifugal filtration. With all the hype, I expected a noticeable difference in opacity between pre- and post-filtered oil. Ultimately I *think* I can see a difference in the first few ounces of oil collected from the first run of oil through a freshly cleaned system but by the time I've collected a cup of oil both samples appear the same. WVO is only a small percentage of my source oil.

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When life gives you lemmings... make lemmingade.

Being that it gets below freezing here,I filtered my oil in the winter.The animal fats seperated from the oil.This made my oil pure vegtable oil.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran