Diesel bug: a European speciality?

Anchorite

Member
Joined
22 Oct 2002
Messages
465
Location
FRANCE nr. Lyons
Visit site
Just been hit with both tanks contaminated. My brother lives/sails in Connecticut asks - diesel bug, wtf is that? Is this a weapon devised by the eco-warriors to limit CO2 emissions - or is he out of touch with similar problems with septic tanks...?
Just asking
 

prv

Well-known member
Joined
29 Nov 2009
Messages
37,361
Location
Southampton
Visit site
I'm sure I've read American articles discussing the same phenomenon. They probably just have a different name for it, like calling osmosis "pox" or "blistering".

Pete
 

Fendant

Member
Joined
30 Oct 2014
Messages
157
Visit site
Well, for once the Yankees are right. The diesel bug is in fact a European speciality. It originates from Germany where the left green government in the 1990 had the desastreous idea to pass a law requiring taxed diesel fuel to have a "bio" content. Chemically this is called FAME , fatty methylester. For mere mortals this is rape seed oil. The hidden bomb with this stupid law remained undetected for quite some time, it is the sharply shortened shelf life life for this diesel "Quality" which is maximum 3 months, which does not matter in car or truck operations. FAME has a tendency to produce heavy microbe growth in the boundary layer between the "real" diesel and water. This is the diesel bug or the diesel pest, as these microbes have the tendency to clog the filters in the fuel system unpredictably.
As a result of this stupid bio fuel decision several emergency power generators in hospitals in Germany failed catastropically causing multi million Euro damages. The German government panicked and allowed within weeks the use of untaxed heating fuel in stationary generators. Commercial maritime operations were not affected, as they were also allowed to use untaxed diesel, which does not contain the darned FAME. However in the boating community the diesel bug became famous, there are numerous reports, where the engines stopped suddenly in wrong moments. This requires a complete cleaning operation of tank and fuel systems and some diesel mechanic shops invested and continue to make good money out of it.

There are 3 legal solutions to mitigate the danger from the crappy "bio" fuel:
a) you only fill up with pure synthetic fuel ( Aral Ultimate or Shell V-Power )
b) You add a additive to prevent microbe growth ( Grotamar or similar products from the yacht chandlers )
c) You only fill your tank in countries not having have the legal equirement for biologically flawed diesel ( Keep the receipt ! )
 

vyv_cox

Well-known member
Joined
16 May 2001
Messages
25,747
Location
France, sailing Aegean Sea.
coxeng.co.uk

prv

Well-known member
Joined
29 Nov 2009
Messages
37,361
Location
Southampton
Visit site
Well, for once the Yankees are right. The diesel bug is in fact a European speciality. It originates from Germany where the left green government in the 1990 had the desastreous idea to pass a law requiring taxed diesel fuel to have a "bio" content.

The problem with that theory is that UK marine diesel doesn't contain FAME, and yet we still get diesel bug occasionally. FAME may well make it worse, but dino-diesel is far from immune.

Pete
 

sailorman

Well-known member
Joined
21 May 2003
Messages
78,869
Location
Here or thertemp ashore
Visit site

vyv_cox

Well-known member
Joined
16 May 2001
Messages
25,747
Location
France, sailing Aegean Sea.
coxeng.co.uk
They also have very large stocks of fuel. Reuters mentioned new low price of Crude

Around twelve years ago I was told of huge stocks of imported crude in underground caverns somewhere in USA. At the time there was no viable method of extracting it. Submersible pump technology has improved a lot since then but I guess that now it makes more sense to just leave it there.
 

theoldsalt

Active member
Joined
24 Nov 2010
Messages
2,113
Location
Bristol
Visit site
The "bug" isn't a new phenomenon nor restricted to Europe. Some 35 years ago I worked in the defence inductry and we imported some new American tracked vehicles from the US that had been in storage for some time.. All the fuel tanks had the "bug" so all the fuel systems needed to be cleaned. This was before FAME was being added to diesel.
 

Colvic Watson

Well-known member
Joined
23 Nov 2004
Messages
10,876
Location
Norfolk
Visit site
Around twelve years ago I was told of huge stocks of imported crude in underground caverns somewhere in USA. At the time there was no viable method of extracting it. Submersible pump technology has improved a lot since then but I guess that now it makes more sense to just leave it there.

It was put there during the Reagan administration. There was concern that a dominant Iran could turn off the OPEC tap, I think the idea was to put about six months supply in there.
 

Bru

Well-known member
Joined
17 Jan 2007
Messages
14,679
svpagan.blogspot.com
The problem with that theory is that UK marine diesel doesn't contain FAME, and yet we still get diesel bug occasionally. FAME may well make it worse, but dino-diesel is far from immune.

MDO (Marine Diesel Oil) doesn't contain FAME however most (?) marinas don't sell MDO*, they sell red diesel a.k.a. gas oil or agri-diesel etc. which, unless explicitly stated as being FAME free, almost certainly will contain FAME.

* I've only seen it on sale on the South Coast presumably because its readily obtainable ex-Fawley where it's produced.
 

macd

Active member
Joined
25 Jan 2004
Messages
10,604
Location
Bricks & mortar: Italy. Boat: Aegean
Visit site
It was put there during the Reagan administration. There was concern that a dominant Iran could turn off the OPEC tap, I think the idea was to put about six months supply in there.

A similar strategic plan was proposed for the UK, using Cheshire's old salt mines. Then someone pointed out that the UK was always likely to be self-sufficient in crudeness...
 

Freebee

Well-known member
Joined
21 Oct 2001
Messages
2,222
Location
Alton, hants
Visit site
Diesel bugs have got little to with Fame they are a group of bacteria and other bugs that live in water and eat the carbon from hydrocarbon.some bugs have mutated from living on pine trees and things like creosotfencing.travelling by windblown spores they soon found their way into fuel tanks via tank breathers. Get rid of the water and the bugs die ..sadly they then choke filters.
 

Fendant

Member
Joined
30 Oct 2014
Messages
157
Visit site
Sorry to correct you:

Ethanol is only used in Petrol ( Yankee speak gasoline ) never ever in Diesel / Kerosine. Never heard about a petrol bug / petrol pest.
Diesel/Kerosine in Europe is using the rapeseed oil, which is causing the problem. The USA never got themselves into the "bio" problem for Diesel fuel.
 
Top