DPF removal? Better think again!

[Paul-R]

No it is not.
It is not designed to digest its own crap like a modern engine whatever it's design basics.

Then we must agree to disagree.

And who says that the Montego didn't have an EGR - which is what I presume you're alluding to?

[Deanxm]

L200, it was supposed to have first service at 12500 miles, i managed 8-900miles.
The handbook and mitsubishi says it is "part of normal operation under certain conditions and is not a malfunction or defect" i go to the north island once a fortnight and have covered 27k in 20 months, ive serviced it 5 times .

D

[Paul-R]

I find I astonishing that a manufacturer can get away with that sort of claptrap. And did you mean 8 - 900 miles or 8 - 9000 miles? If it won't even get to a thousand miles then it's not fit for use regardless of their weasel words.

[Deanxm]

Nope it made it to just under 900 miles from new and brimmed the sump.
If it was my actual car I would argue, I bought it with company money and I service it with my company credit card, at work its a time v money thing as I'm sure you know and its just not worth the agro tbh, besides every service brings the opportunity to drive a different demonstrator car and this one will be gone by its 5th birthday, every cloud and that.
I know Isuzu had the same issue but they had a recall on it and remapped them to reduce fueling during a regen and it worked.

D

[Paul-R]

I presume you've asked the dealer whether there's any update for the ECU on the L200? I just couldn't suffer a problem like that.

[Paul-R]

Boy - has this thread veered off again!

[spider]

Apart from extended servicing intervals to reduce on paper the T.C.O (mainly aimed at fleet buyers I guess), the thing that I feel is potentially overlooked with say engines that have 12-18K oil intervals compared to say 6-9K is the fact the manufacturer may specify a specific oil or a specific type. By this I mean a "low ash" type expensive oil.

I've not done the sums with this but using regular (decent) semi synth compared to uber expensive 'low ash' fully synth oil, it *may* be cheaper to change it twice as often with the cheaper oil.

Although its not exactly 'on topic' with this thread, you may recall when PSA went from 6K to 9K for diesel units and I think 9K to 12K for petrol. The only real change was the filter type at least as far as I could tell . Peugeot went from N2 to R0, I'm not sure of the 'other sides' part number. As I say, as far as I could tell there was no other change such as internal workings to engines. At the time I could not work out if the filter 'design' was to simply filter a bit less to extend its life (and therefore oil pressure) or something else.

There is a lot I could say about DPF's and things but I'd rather not.

[Mandrake]

That C6 was also the fastest production Citroen (faster, I believe, then the C5 with the same engine);

Not true, the C5 beats C6 by 2 mph with the same engine

It might technically be the fastest by top speed, but does it really matter whether the top speed is 140mph (Xantia V6) or 149mph (fastest C6) or 151mph. (fastest C5 ?)

Nobody in their right mind can ever drive at that speed and with many modern cars the top speed is artificially limited anyway - it's all academic. To me "fastest" means the best acceleration within the speeds that you are able to drive, and by that metric the C5 and C6 are not the fastest Citroen made.

I suspect that honour may still go to the BX 16v with a 0-60 time of 7.4 seconds ? I know the CX GTI Turbo 2 was very close to that as well, as would be a manual Xantia V6.

Anyone know what the fastest Citroen models were ranked by 0-60 time ?

[Stickyfinger]

40-90mph is a better split....

[Mandrake]

... but Derv's are fairly smelly horrible things,...

Matter of opinion. I think that petrol engines are nasty revvy little things with no low down pull.

My Xanita V6 would beg to differ. Loads of low down pull right down to about 1400rpm. In fact the gearbox tends to change up a gear to bring you down from 2200 to 1500 or so under normal around town driving conditions.

It's all very well having lots of low down torque but high torque x low rpm still = low horse power. On a petrol V6 you get diesel like low down torque and high revving (6500rpm) high horse power output at the top end.

[Mandrake]

40-90mph is a better split....

Are those figures published for all the models though ? If not its hard to do a comparison that way.

[Hell Razor5543]

Although he is a bit loud and opinionated, Jeremy Clarkson did make a good suggestion for figures to publish on cars; 60MPH to 0MPH.

[Paul-R]

Apart from extended servicing intervals to reduce on paper the T.C.O (mainly aimed at fleet buyers I guess), the thing that I feel is potentially overlooked with say engines that have 12-18K oil intervals compared to say 6-9K is the fact the manufacturer may specify a specific oil or a specific type. By this I mean a "low ash" type expensive oil.

I've not done the sums with this but using regular (decent) semi synth compared to uber expensive 'low ash' fully synth oil, it *may* be cheaper to change it twice as often with the cheaper oil.

Neither of my earlyish Citroens need the low saps oil as neither have a DPF. So I am free to choose the best oil with regard to that. I choose to use a full synthetic oil.

If you have a car with a DPF then you MUST use a low ash (low SAPS) regardless of how often you change it - using a non-low saps oil will cause premature clogging up of the DPF. The DPF is there to catch small particulates but it will catch anything that is bigger than the pores of the filter. This will include any ash left by the combustion of non-low saps oil.

Although its not exactly 'on topic' with this thread, you may recall when PSA went from 6K to 9K for diesel units and I think 9K to 12K for petrol. The only real change was the filter type at least as far as I could tell . Peugeot went from N2 to R0, I'm not sure of the 'other sides' part number. As I say, as far as I could tell there was no other change such as internal workings to engines. At the time I could not work out if the filter 'design' was to simply filter a bit less to extend its life (and therefore oil pressure) or something else.

The filter point is very well made. Maybe it became finer but also had more surface area? I don't know but it'd be good if someone did know for sure.

There is a lot I could say about DPF's and things but I'd rather not.

Why not? it is the nominal title of the thread after all.

[Stickyfinger]

0-60mph is a pointless figure, which is why manufactures like it and try and convince the public (well done German marketing) of the need for it.
Zero-60mph has ZERO relevance to everyday driving or a cars true performance. As Clack-on-son said....40-90mph and 60-Zero are better figures to asses a cars capability.
For those we have only Magazine tests....and people don't believe them when they want to.

[Paul-R]

40-90mph is a better split....

In gear acceleration figures are a very much better way of measuring everyday performance. ISTR that Diesel Car magazine used 30 - 50 and 40 - 70 but I could be wrong. This, of course, is where a turbodiesel will show its superiority as it will not normally have to change down to have meaningful acceleration...