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  #1  
Old 18th February 2013, 05:44 PM
gninnam gninnam is offline
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Default Pleased with the economy

So, Saturday morning set off to that there London for a weekend of fun with the family.
Filled the LPG tank and off we went.
On Sunday took a detour home via Watford to visit the Harry Potter Studio Tour then after 3 hours headed home - filled the tank again
Today I then drove from my home to Manchester and had to fill up.

So covered 460 miles on just over £80 of juice. By my calcs gives me an equivalent of around 44 mpg.

Fan-bloody-tastic
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Andy.

Current cars:

BMW i4 M-Sport

Peugeot 207 (the sons)

Triumph Daytona 675 (2017 reg)

===========================

Gone but not forgotten

Ford Focus ST-2 Mk3 (the wifes) (stolen Oct 2023)

1972 T2 Bay Window Camper (Slow)

Audi TT Mk1 225 - now with coil-overs and a 7inch touchscreen infotainment centre

2003 A8 Sport 4.2 (with ACC & LPG) (Feed up with all the issues so passed it on to a forum member)

2000 A8 FL QS 4.2 (with RNS-E - Nice) (Engine poorly so sold on to be brought back by someone who has the time)
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  #2  
Old 18th February 2013, 07:41 PM
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Dezzy Dezzy is offline
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Good news 80 sounds like diesel.... but with out the sound of diesel
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  #3  
Old 18th February 2013, 07:48 PM
gninnam gninnam is offline
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Quote:
Originally Posted by Dezzy View Post
Good news 80 sounds like diesel.... but with out the sound of diesel
Tell me about it
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Andy.

Current cars:

BMW i4 M-Sport

Peugeot 207 (the sons)

Triumph Daytona 675 (2017 reg)

===========================

Gone but not forgotten

Ford Focus ST-2 Mk3 (the wifes) (stolen Oct 2023)

1972 T2 Bay Window Camper (Slow)

Audi TT Mk1 225 - now with coil-overs and a 7inch touchscreen infotainment centre

2003 A8 Sport 4.2 (with ACC & LPG) (Feed up with all the issues so passed it on to a forum member)

2000 A8 FL QS 4.2 (with RNS-E - Nice) (Engine poorly so sold on to be brought back by someone who has the time)
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  #4  
Old 19th February 2013, 06:55 AM
plankton plankton is offline
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Does the car run okay on LPG? I've heard LPG is suited more to V8's than some other cars.

I had LPG installed on one of my old Saab 9-5's. Economy was 26mpg on LPG compared to 30mpg on unleaded - can't remember what this saving converted to at the time based on cost of LPG to cost of unleaded. I saved nothing over all with my LPG - cost me a fortune in problems. LPG system cost me £1880 - sold the car for less than that a few months later.
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1999 4.2 V8


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  #5  
Old 19th February 2013, 11:19 PM
gninnam gninnam is offline
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Bought it with the setup already installed.
Only had it for around 2 months but well worth it for the savings.
Not really noticed much difference in economy whether running on lpg or not but when paying 70 pence a litre compared to 136 pence litre the cost saving is obvious.

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Andy.

Current cars:

BMW i4 M-Sport

Peugeot 207 (the sons)

Triumph Daytona 675 (2017 reg)

===========================

Gone but not forgotten

Ford Focus ST-2 Mk3 (the wifes) (stolen Oct 2023)

1972 T2 Bay Window Camper (Slow)

Audi TT Mk1 225 - now with coil-overs and a 7inch touchscreen infotainment centre

2003 A8 Sport 4.2 (with ACC & LPG) (Feed up with all the issues so passed it on to a forum member)

2000 A8 FL QS 4.2 (with RNS-E - Nice) (Engine poorly so sold on to be brought back by someone who has the time)
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  #6  
Old 20th February 2013, 07:25 AM
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The_Laird The_Laird is offline
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Quote:
Originally Posted by gninnam View Post

So covered 460 miles on just over £80 of juice. By my calcs gives me an equivalent of around 44 mpg.

Fan-bloody-tastic
Hmm, sorry to rain on your parade, but not sure about the maths here.

At 70p per litre for LPG and around 1 litre equal to 0.22 gallons, the actual economy on LPG is a little over 18mpg. At £1.36 per litre for petrol, the 'cost equivalent' is closer to 35mpg.

Still good, but but a little less than you calculated.

Can someone check my maths too - I have a history of daft obsevations on this forum!
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2002 Final Edition S8. Ebony black with Silver Grey leather and myrtle wood trim.
Current mods: solar sun roof, 20mm rear spacers, 15 mm on front, red brembo callipers, 6k headlights, rear view camera, engine remap, alloy dash dial rings, alloy navi rings, tt/phaeton pedal upgrade, (and custom matching foot rest) dension ipod interface & parrot hands free kit (both fully hidden), av input, tv in motion switched thro' PF switch in blanking plug right of steering column, Audi 'quattro' sill covers, repositioned centre console switches, radio clock, .
Planned mods: auto-dimming rear view mirror, dash cam (as steamship's), fit the ski hatch, refit philips drl's (or maybe not - nope, definitely not - horrible botch!).
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  #7  
Old 20th February 2013, 07:41 PM
gninnam gninnam is offline
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Fair enough but that £80 was made up of 2 fill ups.
One at 69p a litre and one at 74 a litre.
My new calculator gives me around 36 mpg

Still happy with that
__________________
Andy.

Current cars:

BMW i4 M-Sport

Peugeot 207 (the sons)

Triumph Daytona 675 (2017 reg)

===========================

Gone but not forgotten

Ford Focus ST-2 Mk3 (the wifes) (stolen Oct 2023)

1972 T2 Bay Window Camper (Slow)

Audi TT Mk1 225 - now with coil-overs and a 7inch touchscreen infotainment centre

2003 A8 Sport 4.2 (with ACC & LPG) (Feed up with all the issues so passed it on to a forum member)

2000 A8 FL QS 4.2 (with RNS-E - Nice) (Engine poorly so sold on to be brought back by someone who has the time)
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  #8  
Old 21st February 2013, 05:56 AM
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The_Laird The_Laird is offline
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Yep, I'd be happy with that too!

It's an interesting base-line to work out whether it's worth fitting LPG. I know my mileage per annum, so I'm off to do the sums.....
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2002 Final Edition S8. Ebony black with Silver Grey leather and myrtle wood trim.
Current mods: solar sun roof, 20mm rear spacers, 15 mm on front, red brembo callipers, 6k headlights, rear view camera, engine remap, alloy dash dial rings, alloy navi rings, tt/phaeton pedal upgrade, (and custom matching foot rest) dension ipod interface & parrot hands free kit (both fully hidden), av input, tv in motion switched thro' PF switch in blanking plug right of steering column, Audi 'quattro' sill covers, repositioned centre console switches, radio clock, .
Planned mods: auto-dimming rear view mirror, dash cam (as steamship's), fit the ski hatch, refit philips drl's (or maybe not - nope, definitely not - horrible botch!).
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  #9  
Old 23rd February 2013, 12:42 PM
Ricky22buk Ricky22buk is offline
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I have a good size of tank in the boot of my S8 and get the following out of one fill of gas. I'm also very happy with the results !


2002 Audi S8 BRC Gas conversion

416 miles to the tank of gas

It cost me £75.07 for the fill off 97 litres

97 litres = 21.3 gal

So 416 miles divided by 21.3 gal = 19.5 mpg on lpg

£75.07 divided by 416 miles = 18p / mile to run

Financial equivalent £1.38 (petrol / litre) divided by £0.769 (lpg / litre) x 19.5mpg (on lpg) = The equivalent of 35 mpg




Same car on petrol

350 miles to the tank

It cost me £110 for the fill off 80 litres (I think it was 80 anyway)

80 litres = 17.5 gal

So 350 miles divided by 17.5 gal = 20 mpg on petrol

£110 divided by 350 miles = 31p / mile to run



Last edited by Ricky22buk; 23rd February 2013 at 12:47 PM.
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  #10  
Old 23rd February 2013, 04:41 PM
daviesbike daviesbike is offline
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Lpg mmm cheap luxury wafting
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