I may have to clean fungus out of my 20 yr. old 300D fuel tank.
(Now running blend of RUG /WVO, and primary filter gets clogged to quickly with black rubbery looking gunk.
So does anyone have any experience using any Biocides to clean out crap from their fuel tanks???
Thanks,

__________________
'87 924S
'81 280SEL

Sold ->

81 300SD -
93 300E w/ 3.2
85 300D-
79 300SD
82 300CD
83 300CD - CA
87 190E 5 spd
87 Porsche 924S

"..I'll take a simple "C" to "G" and feel brand new about it..."

Worked fine for me. I waited till I had about five gallons in the tank and poured in a whole bottle of the stuff. I took the car out for a short hard drive to make sure it go a good mixing-up. I parked the car and waited over night. Next day I siphoned off the remaining fuel and replaced it with 5 gal. of fresh stuff. Drove straight to the mechanic and had the strainer removed and cleaned. Oh yeah, it’s best done in warm weather.

If you do have a bug infection the die-off can be massive. All that dead stuff will cause havoc with your filters and injectors.

__________________
Toblin

'79 300D, "Liesel von Diesel", 235K

I kid proofed the house....but they still get in

My 300SD had a tank full of fungus when I bought it. Drove 300 miles home at a top speed of 65 mph, due to the clogged filters. Cleaned out the tank when I got home, replaced the filters and put some biocide in the tank. 10K later, no fungus among us. I put biocide in the tank maybe every couple of months, but have had no recurrence of the problem.

My method: I took the strainer out of the tank and let the fuel drain. I then put 5 gallons of lacquer thinner in the tank and let it sit for a couple of hours. Drained the thinner, let it settle and poured it straight through again. Did this several times until it appeared that no more fungus was coming out. I then put everything together and drove. No problems since then.

Good Luck,
Tom

__________________
1993 300TE
1984 300D
1984 300SD
1976 BMW R90S

My second SD had black particles in the prefilter. Diesel Doktor (sp?) cleared it for a few months. A second dose cleared it for longer but it still came back. Smythe European (MB dealer) in San Jose, CA used to carry it but not for a couple of years now.

How about Tinactin or Lotramin?

Sixto
95 S420
87 300SDL

experience the biocide did the trick wo removing anything. put it in let it set over night, presto clean tank. maybe different brands or not a bad case of fungi.

tom w

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

I don't have any links handy right now, but when I researched this a year or so ago, I found the best real-world information was found on marine (boating) sites. There are significant differences in the way different brands work. For example, the old Diesel Doctor was reported to only kill bugs in fuel and not touch bugs in water, which is why the problem comes back in a few months. I would start by searching on West Marine. Look up the different brands found there and then research those individually.

__________________
Palangi

2004 C240 Wagon 203.261 Baby Benz
2008 ML320 CDI Highway Cruiser
2006 Toyota Prius, Saving the Planet @ 48 mpg
2000 F-150, Destroying the Planet @ 20 mpg



TRUMP .......... WHITEHOUSE
HILLARY .........JAILHOUSE
BERNIE .......... NUTHOUSE
0BAMA .......... OUTHOUSE

Biobor, what is it, why do I need it???
http://www.peachparts.com/shopforum/diesel-discussion/105304-biobor-what-why-do-i-need.html#post723857

Filters, Fungus, Biocide, etc.
http://www.peachparts.com/shopforum/diesel-discussion/115952-filters-fungus-biocide-etc-post823378.html#post823378

__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/

Actually Hunter...; Went to West Marine today and 1/2 price $8.00 got this same Bioguard that Phantoms used a couple of years ago...

http://www.peachparts.com/shopforum/diesel-discussion/115952-filters-fungus-biocide-etc-post823378.html

Here is his link; you may remember it....(found it from googling Bioguard)

I may pm him for input on how he used it...looks excellent....

thanks;Austin

__________________
'87 924S
'81 280SEL

Sold ->

81 300SD -
93 300E w/ 3.2
85 300D-
79 300SD
82 300CD
83 300CD - CA
87 190E 5 spd
87 Porsche 924S

"..I'll take a simple "C" to "G" and feel brand new about it..."