Hard Lesson in Diesel Fuel Cleaning

Northern eyes

Recruit
Joined
Jul 19, 2009
Messages
3
I had some serious problems with my fuel and clogging filters. On one occasion, one of my engines just quit, the problem was getting so bad. I had tried different fuel additives recommended by the marina's, but none helped at all. In fact, some actually seemed to make the problem worse. Finally I decided to get my tanks cleaned.
I was educated by the guys( www.perfectfuel.ca )that cleaned my tanks on my 41 ft. Grand Banks.
I was changing filters at least every 30 hours, and no amount of tank treatment was helping. Finally I cut open one of my filters to see what was going on. There was a wax build-up on the filter element and a very distinct sludge on the bottom of the canister. I keep my boat at my residence on the St. Lawrence so I called Perfect Fuel. They came to the boat, took some fuel samples, showed me the crud in the tank, and proceeded to clean the tanks.
I won't get into the technical aspects (that can be found at their web site) but needless to say, it was a learning experience. They took enough crud out of my tanks to fill 20 filters. There were signs of water, sludge, and actual hard dirt in the tanks. They cleaned about 400 gallons of fuel. The job took all day, but in the end, my fuel went from a black mess to clean and clear. The filters no longer clog and we run to Quebec City and back without the engines giving a hint of black smoke or making a mess of the transom.
Moral of this story, maintain your fuel properly, forget about all the junk fuel additives out there and find a good one. I use Algae-X AFC 705 mixed at 5000 to 1. My diesels run much better now, my generator run's better, and my diesel consumption has decreased. Best thing is my wife no longer complains about the smell of diesel.
 

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lkbum

Chief Petty Officer
Joined
Sep 1, 2008
Messages
445
Re: Lesson in Diesel Fuel Cleaning

Re: Lesson in Diesel Fuel Cleaning

Great post... Couple of questions..
1) How much did they charge
2) Did they clean and recycle your fuel or dispose of it
3) How long since the tank had been cleaned
4) What's you average gallon per year use?

Thanks!!
 

Northern eyes

Recruit
Joined
Jul 19, 2009
Messages
3
Re: Lesson in Diesel Fuel Cleaning

Re: Lesson in Diesel Fuel Cleaning

To clean my 400 gallons, they charged $1,194.67. I figured this was a deal considering my tanks were now clean, no fuel was disposed of, my filters now stay clean as does the boat transom. I was also concerned what that fuel can do to my injectors. I run Cummins engines and their injectors are not cheap, and the fuel pumps go for over $4,000.00. I am going to post a before and after shot of my fuel on my origianl post. I use the boat about 20 hours per week, so I was changing filters every week or 2. I have my tanks cleaned once a year now, in the spring before it's first use of the season.
 
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dontask

Petty Officer 2nd Class
Joined
Apr 5, 2009
Messages
177
Re: Lesson in Diesel Fuel Cleaning

Re: Lesson in Diesel Fuel Cleaning

Was it microbial contamination?
 

Northern eyes

Recruit
Joined
Jul 19, 2009
Messages
3
Re: Lesson in Diesel Fuel Cleaning

Re: Lesson in Diesel Fuel Cleaning

Microbes grow in fuel because of moisture in the fuel. The moisture comes from the condensation on the sides of the tank, from the tank being vented to atmosphere, and from moisture that is present in the fuel from storage in other tanks before you received it. The new Ultra Low Sulfur fuel your receiving does not combat microbe activity like the old stuff did. Microbes and their discharge will clog a filter along with the re-polymerization of the fuel. Another bad deal about water in the fuel is that microbes poop and their poop lowers the PH level of the water. That?s bad for tanks, fuel lines and pumps. It turns to acid and soon will cause a leaky tank. Bad day plus your boat will stink something awful.
 
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