Omega Owners Forum

Chat Area => General Car Chat => Topic started by: tcs on 13 August 2009, 10:03:23

Title: Cyclic fuel consumption on Omega 2.0 petrol
Post by: tcs on 13 August 2009, 10:03:23

Hi,
I have always kept detailed records of my fuel consumption (useful for calculating breakeven after lpg conversion!) and have noticed an odd cyclic variation I can't explain.

The car is an Omega estate 2.0cdx petrol manual but I also found a similar consumption on my Carlton estate 2.0 petrol.

I have a sinusoidal variation with a period of about 28kmiles which equates to about 14 months with the consumption varying by over 2mpg (avg about 29).

I can't tie this down to anything, especially as it is quite such an obvious sinusoidal curve. It certainly doesn't match tyre changes and with a period of 14 months it doesn't really match the weather either.

I appear to be getting a similar pattern after lpg conversion but it is proving more difficult to calculate of course.

Any ideas/comments?
Regards.

Title: Re: Cyclic fuel consumption on Omega 2.0 petrol
Post by: feeutfo on 13 August 2009, 15:46:59

nearly empty, fill it back up, easy. :-)

Title: Re: Cyclic fuel consumption on Omega 2.0 petrol
Post by: Big Fra on 13 August 2009, 16:23:59

WTF? :-?

Title: Re: Cyclic fuel consumption on Omega 2.0 petrol
Post by: feeutfo on 13 August 2009, 17:23:50

Quote

WTF? :-?

Yeah, that was my first thought, i think his helicopter is giving him a headache? ....maybe?

Title: Re: Cyclic fuel consumption on Omega 2.0 petrol
Post by: Tonka. on 13 August 2009, 20:37:50

Never analysed Migs fuel consumption that closely...........can't be bothered  ::) ::) ;D ;D

Title: Re: Cyclic fuel consumption on Omega 2.0 petrol
Post by: Lizzie_Zoom on 13 August 2009, 20:47:40

Quote

Hi,
I have always kept detailed records of my fuel consumption (useful for calculating breakeven after lpg conversion!) and have noticed an odd cyclic variation I can't explain.

The car is an Omega estate 2.0cdx petrol manual but I also found a similar consumption on my Carlton estate 2.0 petrol.

I have a sinusoidal variation with a period of about 28kmiles which equates to about 14 months with the consumption varying by over 2mpg (avg about 29).

I can't tie this down to anything, especially as it is quite such an obvious sinusoidal curve. It certainly doesn't match tyre changes and with a period of 14 months it doesn't really match the weather either.

I appear to be getting a similar pattern after lpg conversion but it is proving more difficult to calculate of course.

Any ideas/comments?
Regards.

I dream of such figures!! ::) ::) ;D ;D ;)

Title: Re: Cyclic fuel consumption on Omega 2.0 petrol
Post by: Ian_D on 13 August 2009, 20:48:43

erm... yeah  :o  ;D

Title: Re: Cyclic fuel consumption on Omega 2.0 petrol
Post by: Lazydocker on 13 August 2009, 22:40:27

Stopped monitoring my consumption when I got a Range Rover ::) ::) ::)

Now I just fill it up when it's thirsty, although running fart juice makes it more bearable :y :y

Title: Re: Cyclic fuel consumption on Omega 2.0 petrol
Post by: jonnycool on 13 August 2009, 22:52:13

'Get a life' seems appropriate ::)

Title: Re: Cyclic fuel consumption on Omega 2.0 petrol
Post by: tunnie on 14 August 2009, 15:21:50

i put petrol in it, and it takes me places, job done!  :D

Title: Re: Cyclic fuel consumption on Omega 2.0 petrol
Post by: JamesV6CDX on 14 August 2009, 16:10:11

While I agree the OP seems to be taking the monitoring of fuel consumption to a whole new level - let's refrain from making rude comments at the guy  :y

That said, I must agree with the sentiments already expressed - an Omega (especially 2.0, which is the most thirsty model), is not a car to own, if you're worried about Miles Per Gallon...  :y

Title: Re: Cyclic fuel consumption on Omega 2.0 petrol
Post by: tcs on 17 August 2009, 09:52:25

OK guys, I've got a thick skin  :)
I'm just natuarally curious about such things, which I guess comes from working in a scientific field.
The consumption isn't great but it's damned comfortable!
Regards.

Title: Re: Cyclic fuel consumption on Omega 2.0 petrol
Post by: jonnycool on 17 August 2009, 10:11:55

Sorry buddy, just never come across anyone who's analysed their fuel consumption in that much detail before. A lot of us are trying to get their cars to run at all ;D

Title: Re: Cyclic fuel consumption on Omega 2.0 petrol
Post by: Tonka. on 17 August 2009, 10:26:44

Quote

A lot of us are trying to get their cars to run at all ;D

I like it  ;D ;D :y