Bugs-some facts

DepSol

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Not all creatures we share the world with have the same physiology. There are microbes, which we will refer to as bugs, which can and do feed off of the hydrocarbons in your fuel. Like all micro-organisms they can multiply with astonishing speed. These bugs can double their population every half-hour or even faster.

Fuel bugs are real. The most common types found in petroleum products are Cladosporium Resinae and Pseudomonas Aeruginosa. This class of fuel eating microbes is known in the industry as Hydrocarbon Utilizing Microorganisms or H.U.M. bugs. There is nothing amusing about them.

Once H.U.M. bugs enter a fuel system and find a place to live (more about that later) they multiply with astonishing speed. As the bugs grow in number their bodies begin to take up space. They also produce waste products that float around in the fuel around them. The waste products are of course carbon molecules that can be abrasive. H.U.M. bugs are easy to spot as they quickly form what is called sludge, algae, or dark pasty crud. They can eat almost anything petroleum or hydrocarbon based: fuel, gaskets, seals, hoses and more!

If you would like to see some H.U.M. bugs look at the inside of a fuel tank. Look at your fuel filters. You may see H.U.M. bugs and their waste products. If so they need to be removed from your fuel. They will gum up and block your filter and then stall out your engine. The bugs and waste that do pass through your filter acts upon your engine just like normal particulate matter: they sand blast away at your engine's internals. These smaller particles cause meaningful and absolutely avoidable wear. Your fuel will also not burn as well which causes performance and fuel economy to suffer.

The cure for H.U.M. bugs is two-fold. Remove the ones you already have from your fuel system and do not give them a place to live.
H.U.M. bugs enter your fuel system through several means. When you take on fuel you are picking up bugs with your fresh load of fuel. Yes, the refining process pasteurizes fuel, but as it travels to where you bought it fuel is exposed to contaminated tanks, trucks, and fuel pipelines. Even if perfectly sterile fuel is pumped into your tanks the fuel is not safe yet. Bugs will enter your tanks and get to your fuel through your tank vents, water that drips into your tanks, the filter you just installed on your engine, or any other means by which a single microbe can contact your fuel.

H.U.M. bugs like all creatures need a place to live. H.U.M. bugs live and breed on the boundary layer where the water in your tanks meets your fuel. A few gallons of water can provide hundreds or even thousands of square feet of surface area capable of sustaining huge populations! Bugs CANNOT live in pure fuel. They must live in water. Take away the water in your fuel system and you will leave them with no place to live. Sounds too simple but it is true. Without water the bugs cannot live and multiply. Why do you think that the nefarious H.U.M. bug has not yet eaten the oil coming out of the oil wells after millions of years? NO WATER!




Dom


I just want my boat back in the water ;-(
 

Chris_Robb

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So by making sure there is no residual water at the bottom of the tank, there is no need to add bug killers?

For the last 5 years, having had a major problem, I have pumped half a litre of fuel from the bottom of a 150 gal tank. Apart from less than a teaspoon full of water/sediment, the deisel is totally clear.

Do you think I should put an additive in anyway for safety?
 

DepSol

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As they say prevention is better than a cure. Wait untill the MBM fuel additive test results before you decide.



Dom


I just want my boat back in the water ;-(
 

chas

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The thought of 45 gallons of bugs copulating like crazy in the starboard locker might take the shine off a lovely relaxing sail across Lyme Bay.
 
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Facts ????

Water is present in virtually all hydrocarbon fuels - suspended in ppm amounts. This allows the 'bugs' some leeway !
Second - all diesel fuel is contaminated, no matter what source you get it from.
Third - most other fuels do not have a 'bug' problem - it is a Diesel problem. Or should I say more correctly that no-one requires testing of other fuels as it has not been apparent.

Nigel ...
Bilge Keelers get up further ! I only came - cos they said there was FREE Guinness !
 
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No ----- simpler steps

Most tanks will stay relatively clear .... despite the 'scare-mongering' that has been prevalent over the last few years.

Reduction of oil-water interface and occasional draining of of the bottom sediments etc. should keep most tanks clear for years.

Should anyone actually find a 'black / dark brown' sludge in the bottom of the tank - then this most likely dead 'bugs' and the best thing is add 'bug-killer', drain of the tank bottom - use till tank is nearly empty and then wash out, steam it and then dry before adding fresh fuel. Then keep the bottom of the tank drained off occasionally to keep water at a minimum.

Nigel ...
Bilge Keelers get up further ! I only came - cos they said there was FREE Guinness !
 

byron

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<A target="_blank" HREF=http://www.freeware.mcmail.com/435.htm>http://www.freeware.mcmail.com/435.htm</A>[/b]
 

Freebee

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Re: Facts ????

Unless of course your pride and joy has gas turbines and or a helipad in which case you need to watch for bugs in your kero which also suffers in the same way!
 

nicho

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What a fascinating post - in my previous boat (a motor cruiser with 150 gal fuel capacity), I always used the "Fuel Set" additive. The importer insists that this additive (and presumably other such products), cures all such bug type ills. Is he right in your opinion, or should I be doing something else as well (on My Bavaria, the fuel tank only holds about 20 gals). Your views would be appreciated

Thanks

Mike N
 

ccscott49

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I understand all this, you know that, but lots of water in oil wells, we take it out at surface or at the refnery. Most oil wells are water driven, that's to say the oil sits on top of water and normally, but not always has a gas cap above it. but there's always water present. We also use the bugs, to secondary recover the heavy oil from oil wells, they eat the heavy oil, secrete lighter oil and then we pump it out, amazing eh! the sludge doesn't matter there.
 

DepSol

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Very interesting tell us more.

What we also need is some one who is involved in the refinery process so we get all the picture from drilling to refining and then transport to retail.

would be interesting.

Dom

I am boating again ;-)
 

DepSol

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Well if you have never had the bug since you have been using it then alls well. If it aint broke...etc etc.

Dom

I am boating again ;-)
 

oldharry

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Re: To dose or not to dose - that is the question.

I dont understand why these bugs dont proliferate in the oil wells too, because as someone has already pointed out, most of them have loads of water in them as well - unless Depsol has been an exceptionally good citizen, running round dosing all the wells up with Soltron to help keep our fuel clean for us!

Seriously though, I think there is a bit of scare mongering going on - I have rarely come across a seriously contaminated fuel tank ( the first and worst being half a mile off a lee shore in an unwieldy motor sailer, in a F6 - nasty). Usually it has occurred when a boat has been neglected, and has not had regular fuel replenishment. Otherwise a modicum of care about ensuring fuel supplies are clean - like buying from a reputable source, regular maintenance of the fuel system (which includes keeping the tanks reasonably clean and water free), and - such hardship - using the boat regularly to keep a turnover of fresh fuel, seems normally all that is needed.

And a dose of Soltron or whatever if you like, to make doubly sure. Belt and braces being the essence of seamanship (Know what I mean, Depsol?!)
 

vyv_cox

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Oil well bugs

They do. Water injected down hole is deaerated to very low levels to guard against bacterial growth. Nonetheless, it is a fact that most wells will go sour, that is produce gas contaminated with H2S, during later stages of their production. Production of gas with significant amounts of H2S has all sorts of implications, concerned with safety, materials changes, etc. Oil companies go to great lengths to prevent this, or at least delay it as long as possible.

Nevertheless, many wells produce gas with high H2S anyway. I am working on a compressor in Middle East that has 9% H2S and some of our Canadian sites produce gas with 40%. Canada is a very large producer of sulphur, whose supply now exceeds demand, making disposal a real problem.

So far as fuel is concerned, I agree with you. Good practice and normal cleanliness measures have always been sufficient for me.
 
G

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Now that would be telling !!

nm

Nigel ...
Bilge Keelers get up further ! I only came - cos they said there was FREE Guinness !
 
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OK ... so middle distillates suffer ...

Sorry but the post was regarding Gasoil / Diesel, so I answered on that vein.

Yes it is true that middle distillates are affected in varying degrees and it is NOT isolated to Diesel stock. In fact from kero's through to lubricating oils are affected to lesser / greater degree. Diesel has come under severe flak for this problem as it has blocked filters, stopped machinery etc. etc. The quality control on aviation kerosine is far higher and normally would not be 'terminal' at final end user ..... lubs and gasoil are unfortunately not subject to such strict end-user supply control.

the problem will not go away as it is prevalent from very early stages in process and users are at the end of a long chain ...... remember that diesel can be weeks / months before use via refinery, transit, shipping, distribution .... to the pump !!


Nigel ...
Bilge Keelers get up further ! I only came - cos they said there was FREE Guinness !
 
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