What will kill black algae in diesel fuel....Jim

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James A. Harris

" Diesel Doctor" or " Biobar"...
or check a local marine supply house and ask them.... I am sure there are several brands for this... boats have a real problem given the humidity they work in....

Catfish in the fuel tank?

I've used Diesel Doctor with limited success. My 83 SD had a nasty algae problem. 2 tubes of Diesel Doctor during fill-up cleared the pre-filter and kept it clear for a few months. I never bothered to drain and flush the tank. It ran fine with or without the black stuff showing in the pre-filter.

Sixto
95 S420
87 300SDL

Sixto,
Why are you having a fungus problem in the Bay Area? Are you drawing fuel from a storage tank? We haven't had a fungus problem here in over a decade. One of the biggest reasons was the Calif. law that required all under ground fuel tanks to be dug up and replaced with leakproof tanks.

Peter

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Auto Zentral Ltd.

That will help you..
http://www.peachparts.com/shopforum/showthread.php?t=105304

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ASE Master Mechanic
https://whunter.carrd.co/

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.
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1985 300SD
1983 300D
2003 Volvo V70

https://www.boldegoist.com/

Peter,

The car in question sat for a few months in SF before I came upon it. It was filled at the same very busy Rotten Robbie station my 81 SD and SDL are filled. Those cars never had an algae problem. Come to think of it, the 81 SD sat for a few months in San Jose with a sheared flex plate before I came upon it.

Sixto
95 S420
87 300SDL

Maybe the problem is homeless men with bladder infections using you car for something other that it was intended.

__________________
Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
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Section 609 MVAC Certified
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"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

Which Rotten Robbie is this?

I routinely fuel up at the big Rotten Robbie on Lafayette Ave in Santa Clara; it's generally got the cheapest diesel, and it's a truck stop so it tends to go through a lot of fuel. I've never had a problem with their fuel.