Diesel fuel additives

TEC2000 make some good stuff that works.

The injector cleaner needs to be used neat, but they also do additives for general use and fuel system cleaning.
 
Many old threads on this precise subject if you care to search.

Many additives are truly excellent for lubricating pythons.

However, there's a widespread and growing consensus that using anti-fungal/bacterial treatments on a regular basis is worthwhile. Fuel 'bug' is a real and increasing threat. They are not to be confused with fuel 'conditioners'.
 
I’ve just moved my boat to the south coast and on filling up with diesel for the first time at Port Hamble I was told that their fuel already has some additive which makes it unnecessary, and possibly counterproductive, to add any more. So, what about next time I fill up, possibly in Weymouth or the West Country? Will the diesel I get there also have any additives, will it be the same as or compatible with what is already in? Will adding my own anti-bug additive do any harm?
 
Buy from a legitimate source, problems with fuel bug mostly seem to affect folks frequently seen lugging 20L drums of a red fluid up the pontoon, usually after dark. :)
 
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I think port Hamble like some others put an enzyme based additive in. These additives don't kill bacteria they break down the products of bacteria into something your filters will pass and your engine digest (allegedly) In theory at least it stops the build up of sludge in the delivery tank. There are people that put this in their own fuel for the same reason and it would not hurt to have a double dose. Does it help any? Dunno. However if (like me) you prefer to use an anti-bacterial additive to kill the bug before it becomes established, this is fine but it will kill the enzymes too so it's up to you. My own thoughts are that I am happy they use enzyme treatments to keep their tanks clean but would rather dose my fuel with anti-bacterial treatment in my own tanks. My feeling is that when we had a high sulphur content in our fuel it prevented the bug getting established. Now we have bio diesel and low sulphur diesel I think adding a good quality anti-bacterial agent is the way to go.
 
Many old threads on this precise subject if you care to search.
Very true, but the search facility on the site is rubbish. You need to use the Google search site facility and not a lot of people know how to use that.
 
Very true, but the search facility on the site is rubbish. You need to use the Google search site facility and not a lot of people know how to use that.

I did try searching but as you say it's not the best facility; I did not find any recent threads and the older threads were mostly on the subject of additives to prevent fuel bug which is not what I am looking for.
 
I did try searching but as you say it's not the best facility; I did not find any recent threads and the older threads were mostly on the subject of additives to prevent fuel bug which is not what I am looking for.
I work with a number of plant mechanics who look after "stuff" and we have long discussions about diesel its use and abuse, I'm not a mechanic engineer, and the conclusion I am coming to is:


  • keep the tank and lines as clean as possible;
  • use the best quality fuel you can buy; and
  • only fill the tank with what you need in a season.

The mechanics are not keen on additives as the fuel should have them in the mix. Our problem is we use so little fuel, about 30 lts this year, and we don't store it in ideal conditions. Over the last two years I've been moving from Red to White, primarily for reasons of convenience as I am on a swing mooring and using so little fuel going out of my way costs me more in travel and time than I would save from using Red.

This winter I am steam cleaning the tank, renewing all the fuel lines and primary filter (why is was behind the engine under a bunk is beyond me). The upshot is I can empty the boat each winter, modern fuel has a shelf life, and use it in the car.


You may find this YouTube video of interest.

 
Can anyone recommend a diesel system and injector cleaner?

In answer to your question which no one has answered,I recently had problems with dirty injectors on a car,looked on eBay and chose a cleaner which had good reviews,put it through neat and the rest in the tank,worked first time..
It was called "Liquid Moly diesel purge".
 
In answer to your question which no one has answered,I recently had problems with dirty injectors on a car,looked on eBay and chose a cleaner which had good reviews,put it through neat and the rest in the tank,worked first time..
It was called "Liquid Moly diesel purge".

Thanks, that looks like a good suggestion. I note it's a German product which gives me some confidence. I think I will give it a try.
 
Can anyone recommend a diesel system and injector cleaner?

If you are looking to routinely clean a system that's running OK, but perhaps not quite perfectly, a lot of people were recommending the 'Millers' additive for use in diesel cars. I'm semi-convinced it improved my car a little, but it's hard to be sure, it could just be thrashing it up a few hills well loaded cleared out the DPF. Possibly a bit better mpg, but I don't repeat the same journeys enough to be sure.

In the past, in boats, I've used the Redex additive for diesel (its green!) hard to tell if it did any good, but certainly noticed no downside.
 
"Forte" diesel treatment seems to work well. We used to use it a lot in work for diesel cars that were failing the emisssions smoke test. Full bottle neat into the tank and take the car for a good run. Retest and emissions usually always low enough to pass. Not using it as much these days as diesels with DPF's fitted (plus all the other exhaust treatment going on for Euro 4 and 5) we aren't seeing many emissions failures now.
 
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