Discussion
Hi,
Just looking for sound advice to decoke the dpf on my van. No issues currently present but it's done 100k miles and been driven VERY casually all it's life where I get 55mpg average when the book says it does 43mpg - 55-60mph on motorways (70% of it's life), almost never revved beyond 2krpm, lots of lift and coast, always filled with cheap supermarket fuel... had a hole in the inter cooler inlet pipe caused by a stone with a "Check anti-pollution filter" error had me searching online about how dpf's can easily clog and be expensive to replace.
So I'm wondering if half a tank of v-power and a 3krpm motorway cruise would be a good idea?
Do fuel additives work? Redex or something?
Or is a professional clean worth it?
Anyone had any experience?
Just looking for sound advice to decoke the dpf on my van. No issues currently present but it's done 100k miles and been driven VERY casually all it's life where I get 55mpg average when the book says it does 43mpg - 55-60mph on motorways (70% of it's life), almost never revved beyond 2krpm, lots of lift and coast, always filled with cheap supermarket fuel... had a hole in the inter cooler inlet pipe caused by a stone with a "Check anti-pollution filter" error had me searching online about how dpf's can easily clog and be expensive to replace.
So I'm wondering if half a tank of v-power and a 3krpm motorway cruise would be a good idea?
Do fuel additives work? Redex or something?
Or is a professional clean worth it?
Anyone had any experience?
Sorry, missed my point. I drive this van in a way that is route 1 to a dpf failure. I dawdle around on crap fuel and from what I have read this allows for soot to build up. I need to avoid a failure mid-week. I do 1,000 miles a week and can't afford a sudden clogging. I don't trust the passive purge function when I don't drive in a way that allows for a passive purge to do its thing
How long have you been driving the car?
As said if you were going to have problems you would have had them by now if you have had it a long time.
I stick a tank of premium fuel in once a month or so, I can always tell the difference when I use it and the car does run smoother and return better mpg.
An alternative is a product like this which works out cheaper than a premium fuel fill. https://www.halfords.com/motoring/engine-oils-and-...
As said if you were going to have problems you would have had them by now if you have had it a long time.
I stick a tank of premium fuel in once a month or so, I can always tell the difference when I use it and the car does run smoother and return better mpg.
An alternative is a product like this which works out cheaper than a premium fuel fill. https://www.halfords.com/motoring/engine-oils-and-...
journeymanpro said:
Would you like some one to hold your hand while you drive?
An odd post indeed. 
Based off your driving I think you are OK. DPF problems is more people doing short journeys & turning the car off before it gets up to temperature... Preventing the car from doing a regen/upping the internal temperature to burn it off. DPF regen only occurs when several variables are met (engine up to temperature etc etc), if the car never ticks those boxes it never gets a chance to self regen....problems occur. Your driving would allow for DPF maintenance to take place, so I think you'd be OK.
It probably wouldn't hurt to do a good run at 3k or equivilent once in a while. Same with, when engine is warm & you have time for it to cool down, do a couple of "aggressive" long accelerations (20->60) to blow everything through.
I think all you can do preemptively is check it’s getting up to temperature, temp gauge gets warm (or blowers blast hot air), and do a few journeys at 60mph+ for at least 20min each month. Maybe plug in an ODB reader to check it’s actually regenerating, but normally you’d get a warning on dash if not.
Not sure there’s any point in a clean unless it’s actually gummed up, fairly pricey, think mine cost about £300.
Not sure there’s any point in a clean unless it’s actually gummed up, fairly pricey, think mine cost about £300.
Edited by wombleh on Saturday 15th February 08:10
mattikake said:
Sorry, missed my point. I drive this van in a way that is route 1 to a dpf failure. I dawdle around on crap fuel and from what I have read this allows for soot to build up. I need to avoid a failure mid-week. I do 1,000 miles a week and can't afford a sudden clogging. I don't trust the passive purge function when I don't drive in a way that allows for a passive purge to do its thing
If you genuinely do 1k a week, you must have some normal motorway driving within that. Which should cover any re-gens.however, if you are really so concerned about your driving style causing harm, and your vehicle is essential. Just buy a new OEM DPF and fit it. Then have someone look at your current one with a view to cleaning and fitting as and when necessary.
Of course, if your vehicle is genuinely important to you, it is idiotic driving in a manner you believe may cause harm, and even dumber to use "crap fuel".
So any problems will be self inflicted.
Although if it's French....may also consider a new van soon anyway as it'll probably die anyway.
If you are concerned about the dpf then suggest you get the rpm up to at least 2.5k rpm for 20 - 30 minutes(to get engine to run hotter) on your next motorway journey (keep it 4th or so). This should initiate a regen if any build up of soot has indeed occurred.
Occasional tank of premium and a dose of redex type won't do any harm.
Italian tune for peace of mind.
Occasional tank of premium and a dose of redex type won't do any harm.
Italian tune for peace of mind.
premium diesel has reduced ignition delay and so produces less soot than a non-premium diesel used under the same conditions.
if you dont want to use premium diesel, buy 2ehn from ebay and add 100-200ml per full tank for the same benefit albeit with reduced cost.
DPF regens and warning lights use pressure sensors before and after the fitlter, too much differential and a light comes on. think about ways of reducing the DP
if you dont want to use premium diesel, buy 2ehn from ebay and add 100-200ml per full tank for the same benefit albeit with reduced cost.
DPF regens and warning lights use pressure sensors before and after the fitlter, too much differential and a light comes on. think about ways of reducing the DP
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