An fuel additive for Diesel Particulate Filter ?

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Thu 2 Apr 2009 18:34
An fuel additive for Diesel Particulate Filter ? - dervdave
Anyone making a fuel additive for operating a diesel engine equipped with a particulate trap to assist its regeneration ?
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Thu 2 Apr 2009 18:50
An fuel additive for Diesel Particulate Filter ? - rtj70
Apart from the liquid needed for some earlier filters on PSA cars (FAP filter needing Eolys).... nothing more than diesel needed.

If the temperature is high enough it burns off the DPF filter. If not more DIESEL is added so it burns it he exhaust to burn off the particulate matter on the DPF.

This is verging on technical so may be moved there if that is how the thread goes.
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Thu 2 Apr 2009 19:36
An fuel additive for Diesel Particulate Filter ? - dervdave
Yeah thats fair enough, I thought maybe the addition of Cerium oxide to help stop the soot particles sticking together might help in the burning off.
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Thu 2 Apr 2009 20:41
An fuel additive for Diesel Particulate Filter ? - bell boy
i hear that wee wee is used in commercials,maybe you could harness your family into saving it for you?
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Thu 2 Apr 2009 21:05
An fuel additive for Diesel Particulate Filter ? - craig-pd130

you can buy the Eolys fluid from PSA dealers but it ain't cheap, it's around £60 a litre.

I do have the dose information if you fancy trying it, will post it when I'm back at work.

I tried using the old Eolys (£30 / litre) as an economy / power additive in my old Passat PD130 (non DPF), as cerium oxide is supposed to help combustion as well as catalysing soot burning in the DPF.

Result? No discernible / measureable / repeatable difference in performance or economy.

My 10 pence worth is, don't bother ... buy some nice wine or spirits instead :)
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Fri 3 Apr 2009 10:13
A fuel additive for Diesel Particulate Filter ? - dervdave
Well my thinking was that for instance we know all wood burns but it does it differently, some slow some quick and if there was something you could add to your diesel tank to help make the soot in the Paticulate Filter more combustable to reduce the time, frequency and efficiency of the regeneration process.
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Fri 3 Apr 2009 16:39
A fuel additive for Diesel Particulate Filter ? - craig-pd130

Fair point, but I'm not sure if the Eolys fluid is compatible with the latest generation catalyst-coated DPFs.

They are fussy about the type of engine oil (it has to be an ashless type, to avoid the risk of blocking / contaminating the DPF), I wonder if the fluid wouldn't contaminate the DPF.

The dose information I got from Rhodia (the company that makes Eolys) is:

DPX 42 (the old stuff for 1st generation PSA engines with DPF): 31ml for 50L diesel

Eloys 176 (the 2nd generation stuff): 8ml for 50L diesel


The Eolys 176 is hugely expensive.

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Fri 3 Apr 2009 17:19
A fuel additive for Diesel Particulate Filter ? - dervdave
Thanks for the answers, I knew a little about these additive that are automatically dosed but hadn`t realised they could be added manually, there was some for sale on ebay recently.
There seem to be a lot DPF problems happening and the vast majority are blamed on stop start urban driving, so anything which could help initiate and aid thorough regeneration would only be beneficial.
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