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#1
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The definitive WVO residue thread
I've heard a lot of people taking about problems associated with WVO residue, call it polymerized WVO, mainly how to get rid of it.
There's been a lot of claims about what works to desolve WVO residue. I had a bit of time while at work yesterday to put various substances to the test and see if we can figure out what works and what doesn't. If the info can be used to help anyone keep an old MB on the road it will be worth it. Objective: test various substances ability to desolve WVO residue. Method: I took a sample of polymerized WVO from one of our filter housings at the plant and broke it into physically equal size pieces. I measured out equal amounts of the test substances into a 80ml beaker and put it on the magnetic stirrer. Testing each substance one at a time I dropped in a piece of the WVO and let it stir for 20 minuets. I observed the state of the WVO after the 20 min stir and took pictures for us all to use to draw some conclusions. Substances to be tested: Acetone Naphtha Potasium hydroxide solution ph 13 99% pure methanol Cascade dishwasher soap with dawn Lacquer pain thinner Pure biodiesel 300 degree f clean penut oil Any ideas which one worked best? Stay tuned for results
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Current fleet 2006 E320 CDI 1992 300D - 5speed manual swapped former members 1984 300D "Blues Mobile" 1978 300CD "El Toro" |
#2
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Heated peanut oil?
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#3
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Yes. There was some claim that more hot VO would dissolve WVO residue
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Current fleet 2006 E320 CDI 1992 300D - 5speed manual swapped former members 1984 300D "Blues Mobile" 1978 300CD "El Toro" |
#4
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Pure biodiesel
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Greg 2012 S350 BlueTEC 4Matic 2007 ML 320 CDI 2007 Leisure Travel Serenity 2006 Sprinter 432k 2005 E320 CDI 1998 SLK230 (teal) 1998 SLK230 (silver) 1996 E300D 99k, 30k on WVO Previous: 1983 240D, on WVO 1982 300D, on WVO 1983 300CD, on WVO 1986 300SDL 237k, 25k on WVO (Deerslayer) 1991 350SDL 249k, 56k on WVO - Retired to a car spa in Phoenix 1983 380 SEC w/603 diesel, 8k on WVO 1996 E300D 351k, 177k on WVO |
#5
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Potasium hydroxide solution ph 13 is my guess.
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All Diesel Fleet 1985 R107 300SLD TURBODIESEL 2005 E320 CDI (daily) LOTS of parts for sale! EGR block kit http://www.peachparts.com/shopforum/diesel-discussion/355250-sale-egr-delete-block-off-plate-kit.html 1985 CA emissions 617 owners- You Need This! Sanden style A/C Compressor Mounting Kit for your 616/ 617 For Sale + Install Inst. Sanden Instalation Guide (post 11): http://www.peachparts.com/shopforum/diesel-discussion/367883-sanden-retrofit-installation-guide.html |
#6
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I'm looking for some LA Awesome to add to the test list.
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Current fleet 2006 E320 CDI 1992 300D - 5speed manual swapped former members 1984 300D "Blues Mobile" 1978 300CD "El Toro" |
#7
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I'll go out on a limb. I'm rational enough to know that being wrong is part of learning.
I would not expect heated peanut oil to dissolve the sludge. I would expect that heat will soften it, like it will soften petroleum based plastic, but I would expect almost any medium that conducts heat to the sludge to be as effective. I usually use a strong base to clean up veggie mess. Superclean is lye based and I've been known to let parts soak in it for days. It works. The end result is usually a cloudy mess that's a mix of soap, water, veggie sludge, and whatever other chemicals were in the cleaner. I don't know how it will fare in a 20 minute test. Methanol won't work. I use it for helping dry water out of my cubies after rinsing them out. It does nothing to clean them by itself. In a 20 minute test, acetone might look very effective. Spray cleaners such as Brake cleaner with acetone will get cloudy when sprayed on veggie sludge but when left with the expectation that a large amount of sludge will be softened or removed, acetone does not seem to be effective. I wonder if the acetone can only dissolve a certain amount of the sludge before it's saturated. Additionally, it can damage some plastics so use as a cleaner might not be appropriate. Dishwasher soap can be some complex stuff. Some versions have heat activated agents that can coat a container or part if applied with low heat and will only come off with physical removal. I only know this because one of our drivers used dishwashing detergent as a carwash and we ended up having to buff the van to remove the junk. As a cleaner, though, it's relatively mild. Dishwashers use heat and water jets to do most of the cleaning. The detergent's main job is to keep food from sticking to the dishes and aid in rinsing. I would not expect the Cascade detergent to be effective. Lacquer thinner is not defined by ingredients but by expected use. Lacquer thinner composition can vary from brand to brand and from one region to another. Most LT contains Ketones, Esters, and/or glycol based solvents with toluene, xylene, or naptha. Lacquer thinners do not react with most cured finishes and I would not expect it to have much effect on VO sludge. I'm having trouble predicting the effectiveness of BD based on lack of experience using it as a cleaner or a solvent. I'll hazard a guess and say it was "fairly effective" in your testing.
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When life gives you lemmings... make lemmingade. |
#8
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Add carburettor cleaner, simple green, citrus cleaner to the list also if possible.
The carb cleaner was very effective in disolving/cleaning stubborn carbonized buildup in siphon nozzles used in wvo burners.
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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 |
#9
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Problem with base cleaners like sodium hydroxide is it dissolves aluminum and darkens steel. Simple green also discolor metal if in contact long enough. La Awesome does not have any of the above negatives and is my polyed wvo cleaner of choice. Does not eat your skin like sodium hydroxide either.
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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 |
#10
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Of the substances I've tested so far one, in particular, is by far the most effective.
I've got a handful of others to add to the test list this morning. Stay tuned for full results..
__________________
Current fleet 2006 E320 CDI 1992 300D - 5speed manual swapped former members 1984 300D "Blues Mobile" 1978 300CD "El Toro" |
#11
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Bio diesel would be my favourite.
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David 1996 Mercedes S124 E300TD - 129k - rolling restoration project - 1998 Mercedes W210 300TD - 118k (assimilated into above vehicle) |
#12
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Please do tell pronto. I can't stand it anymore I'm pissing in my pants!
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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 |
#13
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Quote:
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When life gives you lemmings... make lemmingade. |
#14
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Quote:
So, to pick up where i left off.. I tested quite a few substances with the method describes previously and have ranked them accordingly 0 - No effect what so ever 1 - Some physical breakdown and some chemical breakdown. Possibly more if exposure time was increased. 2 - Definite chemical breakdown
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Current fleet 2006 E320 CDI 1992 300D - 5speed manual swapped former members 1984 300D "Blues Mobile" 1978 300CD "El Toro" |
#15
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First the 0's
Water(for reference) Acetone Naptha Sulfuric Acid ph 1.5 Dish Soap Pure Bio Diesel Generic Orange Cleaner/Degreaser There are more pictures but they all look the same for this category
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Current fleet 2006 E320 CDI 1992 300D - 5speed manual swapped former members 1984 300D "Blues Mobile" 1978 300CD "El Toro" |
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