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Yip i want to run the car on an eco friendly fuel, thats economically friendly, in no way does it mean environmentally friednly. So what can be put into a hdi engine without all the seals burning out, a new fuel pump being needed, and me having to take a degree in chemistry?

You can't get cheaper than home made biodiesel, as low as 7p per liter,
you don't need an O leval in chemistry (I can do it and I faled my CSE) just a little common sence and some time.

any chance of a guide on what to do when brewing the bio ?

I would be very very cautious about putting anything other than diesel in an HDI fuel system. The pressures involved are so much higher than the 1.9 or 2.1 diesel engines, and I would not be keen on giving it a reason to go bang while saving a few £'s. Modern engines are so much more complicated and finely tuned I'm always cautios about tinkering. But maybe i'm just a chicken?

If you do it, keep us posted how it goes.

Richard.

thats what im afraid of also, the old peugeots with the xud could drink any old rubbish and it didnt do them a button of harm, but the hdi with all its extra bits doesnt sound like it would take bad diesel

I get 55ish mpg out of my HDI 110 estate which as far as I'm aware is as it left the factory. I think that is good for a big car well loaded most of the time so i'm going to leave mine alone. Goes up to 58ish if I turn the air con off.

how though, what am i doing wrong, im doing motorway driving and 46mpg is what its getting at 70mph and slightly above that for overtaking? and 46 mpg is not bad i thought for a big car, but if your getting 55mpg in a bigger car what wrong with mine, because it had all its fluids and filters changed, i even used some of that fuel additive.
Is your 55mpg figure worked out over how many miles you travelled vs how much you put in or is it what the trip computer says because my cars average mpg is 41 which is off a bit?

I'm sure it just depends on how much you granny it, watch the instantaneous consumption for various speeds, I think if you can hold it under the dreaded 3.200 you do much better than above it. Mine does mostly around town and I'm still getting 6.4l/100km (44mpg) because I'm driving it like an old dear on mogadon. And my cat seems to be filling up with soot again

406executiveHDI wrote:im doing motorway driving and 46mpg is what its getting at 70mph and slightly above that for overtaking?

if you do a lot of m-way then just try running at 68mph instead of doggedly trying to do 70, the tiny adjustment on speed makes no discernible difference on times but the action of trying to stay just under the speed limit made a lot of difference to my consumption.

its a mindset thing rather than anything else, if you want the economy you will have to adjust your driving style to suit. 65mph is way more economical than 70mph in my experience, but then that could have just been my car that was built like that i think not and as i said it makes very little difference to journey times, you just have to accept that other cars will overtake you a bit more.


just my 2 zloty worth like.

Checked the fuel comp the other day by the traditional miles per tank fill and its pretty good. I do about 65 - 70 on the mway. Good mpg is about gentle driving, anticipation and avoiding breaking. Basicaly, speed and agressive driving are expensive.

i just need to relax a bit then and drive easier, no problem.

The way I look at it is that you may save £6.50 on one hand but have a £900.00 bill for injector refurbishment on the other

Stick to full-cream diesel and drive like a pussy

Even then though I swore by giving mine a jolly good full-boost blast every day and it always ran really clean and sweet (well, mostly ).

Whats causing this altenating cruise control problem which seems to have been there since getting the car, it only works on altenating journeys, unless i pull over and wait 2 minuites until something makes a click and then it works again, brake light works ok and the clutch seems to work

406executiveHDI wrote:Whats causing this altenating cruise control problem which seems to have been there since getting the car, it only works on altenating journeys, unless i pull over and wait 2 minuites until something makes a click and then it works again, brake light works ok and the clutch seems to work

Woah there big guy, I think this needs it's own thread!

Well i filled the car up today got 700 miles from the tank, the trip computer said 37 miles left but i was able to fill 70 litres into the car, where was the rest of the diesel. But anyhow since filling up ive began driving economically, no more wheelspin, no more 75mph, i just sat doing 65 on the motorway and the trip computer just stayed above 55mpg so this time it might actually make a difference i might average 55 hopefully. But its not easy, usually when i pull out of a junction i plant the throttle, but this gradual movement for slow acceleration is hard.