Yesterday, on the way to work, Marlene plugged another primary filter (the one next to the lift pump). This time I was able to limp into work becasue the problem didn't manifest itsself until higher speeds (and fuel flow) so, I was thinking that it might actually have been clouded fuel because the temps recently have dropped into the 50° region.

This morning, I pulled the filter and upon examination, I discover there's a thimblefull of black guck in the filterbody...pretty much the same guck as last time!!

What is this stuff! I never had a problem with algae when running on diesel and this crap is thick enough that if it was in my WVO, I'd be seeing it collect on my WVO filter media in the storage and filtering apparatus I have in the garage.

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Never a dull moment at Berry Hill Farm.

I am plugging primary filters the last couple days myself and it has been warm outside. No alarming black gook or anything like that. I read a post by psfred (I think) that said bronze looking stuff indicates algae, I may be seeing that or just the color of the oil. Strangely in the past when I plugged the primary the secondary plugged soon after. That is not happening this time. I am near the bottom of the tank and may pull the screen when I empty the tank. I have never run any biocide type treatment in my car.

The screens I am using clean really well. I blast them with some carb cleaner or starting fluid and then some air. The car runs just fine. I am going to carry an aircan like used to dust a computer today, just in case.

I saw some black particles collect in my primary right after I started running WVO, not much. Haven't seen any in a while.

I have seen some fatty buildup in my fuel filler neck.

sounds like petroleum/algae crud. You may not have had any problems with algae before, but maybe they find your WVO particularly yummy, and invited the friends and relatives over to a feast in your tank

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'82 300SD - 361K mi - "Blue"

"Good judgement comes from experience. Experience comes from bad judgement."

listen, look, .........and duck.

Try filling your tank to full and see what happens...does the power return again, if only for 100 miles or so?

That is what my car is doing. I'm pulling the filters and screen this weekend and see what I find. I just recently started WVO blends.

I had not changed any filters or anything yet. I wanted to run on WVO a little while to see if the magical cleaning properties would flush some crap out and into the filters. Then I can have a "clean start" so to speak.

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1987 300TDT
1981 VW MKI Caddy 1.6 diesel, waiting on engine swap
1983 D-50 Power Ram 4x4 "Mitsubishi" 2.3 turbo diesel
assorted gas powered crap and motorcycles

RIP: 1984 300TDT, 1982 300TDT, 1984 190D 2.2, 1992 300D 2.5, 1987 300TDT, 1982 Maxima LD28, 1983 Maxima LD28, Isuzu C223 P'ups X3, 1983 Holiday Rambler 6.2 Banks turbo diesel, 1984 Winnebago LeSharo 2.1 TD, 1985 Allegro 6.5

I agree.
The other possible issue, are you running B100?
When you change from Diesel to B100, the B100 acts as a cleaner, and breaks loose the dino diesel sludge in tank, screen and lines, the dino diesel sludge tends to clump.
I would Biobor shock the system and carry extra filters, just incase it is algae.

I have talked with several people who switched over, most of them started at home brew B20 and worked up to B100 over months.
Roughly 40% of them went through excess filter changes for a period of one month.

You could run low on fuel and pull the tank for cleaning, or just keep going until all the dino glop is gone.

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1985 300SD
1983 300D
2003 Volvo V70

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This sounds like what I'm getting in the pre-filter in my '80 300TD; since May 1, 2004 I've been burning blends of WVO settled and filtered to 0.5 micron. Lately I've been running 90% WVO and 10% RUG. It's going fine, but I'm still getting the black stuff in the pre-filter. When this first started happening I thought it might be restricted flow due to the viscosity and responded by adding diesel #2 or RUG. The problem did not seem to be related to cool weather (Central California summer). Reducing the viscosity sometimes seemed to help but didn't really solve it. What has solved it every time is changing the filter. They're cheap and take 5 minutes to swap. I fill the new one with WVO and I'm back on the road.
It's pretty well-known that biodiesel causes this by dissolving or loosening deposits from inside tank surfaces. I've heard it said that WVO can do this too. I'm hoping it will diminish with time. I'm hoping it isn't dissolving any rubber hoses or other rubber parts. I want to remove and inspect some of these, such as the injector leak-off hoses and tank-to-fuel- line hoses. I recently added some Biobor in case "algae" is involved. I've had some success with cleaning out the used filters; I carry spares, and just ordered 10 from Fastlane. I checked the tank screen some time ago and found it clean; check archives ("tank screen") for my technique with tank full. I did replace the main filter early on as I didn't know its age. I bought the car last October, and the odometer was stuck until I fixed it a couple of months ago, thanks to advice on this forum. Search more, and listen to P.E. Haiges for the easier way to find out if the tank screen is blocked.

Its not algea, its fungus: Cladosporium resinae and Pseudomonas aeruginosa.

Only solution is to use a biocide like Biobor.

P E H

OK, OK...fungus (I knew that would get you off the sidelines PEH ). But, I'm not all that convinced it is fungus. Afterall, I didn't have a 'fungus' issue in the over 20k miles of operation before I started running WVO.

For the record, I'm collecting chinese and cajun-grade cooking oil, allowing it to settle about 5-7 days and then cold filtering it through a 'danalinscot twillŽ' filter system, settling again for a few days before draining into a holding tank. It is dispensed to the vehicles through a Goldenrod. FWIW, there have been no similar issues with SWMBOs 300d but, so far, she's only run 1/2 the fuel I have since we started on WVO.

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Never a dull moment at Berry Hill Farm.

I have had some little black dots of gunk in my filter and changed it out. I found this due to feeling some hesitation at higher speeds again. After changing the Primary filter it made no difference, I still have the hesitation. Have a problem making it up the big hill on 360 and the one on 2222 going toward 620.....arghhhhhh.....don't think I'm gonna figure anything out till I do the valve adjust that probably hasn't ever been done....


I would accept the diagnosis that maybe your WVO is cleaning your tank.....getting long built up gunk from the tank finally breaking free.... but only because I've seen that listed a lot.....

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1998 W202 C230 - The money pit of late.
1984 W126 300SD (356,800 miles) Gone to the wrenchapart
1984 W123 300D Gone to the wrenchapart
1972 W108 280SE 3.5 (sold but not forgotten)
1986 Buick Grand National 3.8l Turbo (86k miles)
1966 Glassic Model 'A' Replica http://www.glassicannex.org

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KNOTMAN, are you filtering to 5 microns or 0.5 microns?

90/10 mix? Any mods to the car or are you running unheated blend in your main tank?

__________________
1987 300TDT
1981 VW MKI Caddy 1.6 diesel, waiting on engine swap
1983 D-50 Power Ram 4x4 "Mitsubishi" 2.3 turbo diesel
assorted gas powered crap and motorcycles

RIP: 1984 300TDT, 1982 300TDT, 1984 190D 2.2, 1992 300D 2.5, 1987 300TDT, 1982 Maxima LD28, 1983 Maxima LD28, Isuzu C223 P'ups X3, 1983 Holiday Rambler 6.2 Banks turbo diesel, 1984 Winnebago LeSharo 2.1 TD, 1985 Allegro 6.5

You better get that valve adjust done before I have to offer you $50 for that SD as a parts car!

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Never a dull moment at Berry Hill Farm.

ok...I'll be out there on Sunday afternoon...make sure the wrenches are ready......

Oh...and send me directions and I'll bring the coffee....

Seriously, I do want to do that soon, but I need the wrenches, the new gasket, and a complete oil change right after......gonna be an all day job for me....

__________________
1998 W202 C230 - The money pit of late.
1984 W126 300SD (356,800 miles) Gone to the wrenchapart
1984 W123 300D Gone to the wrenchapart
1972 W108 280SE 3.5 (sold but not forgotten)
1986 Buick Grand National 3.8l Turbo (86k miles)
1966 Glassic Model 'A' Replica http://www.glassicannex.org

http://banners.wunderground.com/weat...Round_Rock.gif

Can't this Sunday. Retrieving another parts car...

__________________
Never a dull moment at Berry Hill Farm.

My final off-vehicle filter is a bag I got from Greasel for $13.00, rated at 0.5, that is zero point five, micron, or one half micron. Before that comes settling for weeks and a trip through a Dana style fabric bag.
90/10 blend with RUG in fuel tank. No modification to car.

0.5? DAMN!!! I would think it would not flow at all.

My 5 micron bags flow ok for about 30-40 gallons. then start slowing down a lot. I've heard than 10 micron is sufficient so I figured my 5mic was plenty good.

what size bag? #1 7x16 ? how long to run 5 gallons through it? What size filter BEFORE the 0.5 micron bag?

I settle 1-2 days...25 micron...5 micron...mix 50/50 with diesel...into the fuel tank.

__________________
1987 300TDT
1981 VW MKI Caddy 1.6 diesel, waiting on engine swap
1983 D-50 Power Ram 4x4 "Mitsubishi" 2.3 turbo diesel
assorted gas powered crap and motorcycles

RIP: 1984 300TDT, 1982 300TDT, 1984 190D 2.2, 1992 300D 2.5, 1987 300TDT, 1982 Maxima LD28, 1983 Maxima LD28, Isuzu C223 P'ups X3, 1983 Holiday Rambler 6.2 Banks turbo diesel, 1984 Winnebago LeSharo 2.1 TD, 1985 Allegro 6.5