better fuel efficiency

16011996

yeah, don't think the school run is the place to start.

Preferably not in a 30mph zone! That could be expensive!!!

edited cos on tird glass of wine.

cathy_3

Preferably not in a 30mph zone! That could be expensive!!!

though tempting when I drive through the nearest town at lunch time and find the streets teeming with teenagers on their lunch break

heh heh heh

cathy_3

edited cos on tird glass of wine.[/quote]

is that tird with a U




wish I could like wine, I could enjoy myself then, lol

but wine?? ewwwwwwwwwwwww

16011996

sorry, meant third. but its fourth now (is half lemonade befor any one makes a comment). :-[

cathy_3

16011996

thats me, off to get oldest kids to bed, and veg out. see you tomorrow, when i'll look like this 8) but wiothout the smile.

robnye

I noticed my fuel recently was being used up at a fast rate of knots  couldnt understand it until I opened the boot and found that the old fart had left his two really heavy tool boxes in there plus  a large bag of logs!!

didnt the fact that only the two rear wheels where touching the ground, giev away that some heavy was in the boot? ;D ::)

cathy_3

if you saw the size of me youd realise that that is the norm when Im driving

moneymart_3

56mph is not the "most economical speed for most cars" - it is simply one of the two speeds (75mph being the other one) which used to be used years ago by manufacturers when they published their fuel consumption figures (long since replaced by much more realistic urban, extra urban and combined figures, as the 56 & 75mph figures were totally useless).

In order to find the most economical speed for your car, you need to look at the torque curve - the most economical speed is whatever the speed when you're driving in top gear with the engine rpm at the lowest speed possible where it achieved 75% of it's maximum torque.

In diesels, this is around 2000rpm, in petrol it's around 3000rpm.

At 56mph, you are more than likely driving slower than the cars most economical speed.

16011996

without wanting to sound thick, whats rpm. :-[