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[Kevin Wood]

Hmmm, maybe got too much lard on my arse. Although i only ever do empty motorway miles as a rule. Only time i've noticed a differance in running is on the bike thinking about it, long ride out on a warm day, feels  smoother on the way home when the air is a good 10 to 15 degrees cooler. More air molecules and all that. It all comes together, the bike sings and smooths out, makes the hair stand up on the back of your neck when riding. Your sat right on top of the motor on a bike, its a bit more removed in the car with rubber engines mounts etc.

Have you played "guess the fuel" in yours? Have to turn the radio up so you cant hear the tank click over. The hic up is a give away it high revs obviously. :-)

Ahh, well, lower air temperature means more power. Can't say it's that noticeable on the Omega but on the Westfield (foam filters poking out of the bonnet!) it's very noticeable. I guess it's the same on a bike.

There's no noticeable difference in performance between LPG and petrol, IMHO. If anything it's slightly smoother on LPG, but that's about all I can say.

Kevin

[feeutfo]

Hmmm, maybe got too much lard on my arse. Although i only ever do empty motorway miles as a rule. Only time i've noticed a differance in running is on the bike thinking about it, long ride out on a warm day, feels  smoother on the way home when the air is a good 10 to 15 degrees cooler. More air molecules and all that. It all comes together, the bike sings and smooths out, makes the hair stand up on the back of your neck when riding. Your sat right on top of the motor on a bike, its a bit more removed in the car with rubber engines mounts etc.

Have you played "guess the fuel" in yours? Have to turn the radio up so you cant hear the tank click over. The hic up is a give away it high revs obviously. :-)

Ahh, well, lower air temperature means more power. Can't say it's that noticeable on the Omega but on the Westfield (foam filters poking out of the bonnet!) it's very noticeable. I guess it's the same on a bike.

There's no noticeable difference in performance between LPG and petrol, IMHO. If anything it's slightly smoother on LPG, but that's about all I can say.

Kevin

see thats my piont (assuming the maths adds up) lpg is said to be less powerfull than petrol? I bet the differance between the 2 is wider than between unleaded and super?

We cant feel the differance between the two, yet some say they can tell the differance between a couple of octane through a seat of the pants test....

cabon deposits are another matter though.....obviously.

Interesting though 

[Kevin Wood]

I have something that will be able to feel the difference.

http://www.race-technology.com/ap22_2_82.html

Have been meaning to do a LPG/Petrol comparison run on the A32 <cough!> my private test track since I did the conversion but haven't got round to it.

Kevin

[TheBoy]

Hmmm, maybe got too much lard on my arse. Although i only ever do empty motorway miles as a rule. Only time i've noticed a differance in running is on the bike thinking about it, long ride out on a warm day, feels  smoother on the way home when the air is a good 10 to 15 degrees cooler. More air molecules and all that. It all comes together, the bike sings and smooths out, makes the hair stand up on the back of your neck when riding. Your sat right on top of the motor on a bike, its a bit more removed in the car with rubber engines mounts etc.

Have you played "guess the fuel" in yours? Have to turn the radio up so you cant hear the tank click over. The hic up is a give away it high revs obviously. :-)

Ahh, well, lower air temperature means more power. Can't say it's that noticeable on the Omega but on the Westfield (foam filters poking out of the bonnet!) it's very noticeable. I guess it's the same on a bike.

There's no noticeable difference in performance between LPG and petrol, IMHO. If anything it's slightly smoother on LPG, but that's about all I can say.

Kevin

see thats my piont (assuming the maths adds up) lpg is said to be less powerfull than petrol? I bet the differance between the 2 is wider than between unleaded and super?

We cant feel the differance between the two, yet some say they can tell the differance between a couple of octane through a seat of the pants test....

cabon deposits are another matter though.....obviously.

Interesting though 

Higher octane defo noticable on my MV6, on the rare occasions it gets it.  Actually, the difference between bog standard BP and whatever junk Asda/Tesco flogging is noticible (both mpg and more perkiness).


High octane allows the ecu to advance more

[Marks DTM Calib]

Well Mick Dundees heads were taken off following a 130 mile drive......

[Martin_1962]

I have done 0-60 tests pre 3.0 cams with diffrent fuels

Super Unleaded such as BP Ultimate or the super Shell was quickest, then LPG, then supermarket petrol.

Been using BP Ultimate exclusively except when I am near a Shell station (none in Worcestershire).

When the Lambda code was cleared and running on BPU on the way home from Newent I got my best ever accelerate but forgot to record it. But I remember it was quick.

[feeutfo]

dont get me wrong. There must be a differance. I bet if you had accurate enough equipment you could tell a differance between one tank and another of the same type over a long enough period. But thats not my point.

Any noticeable differance to the driver by seat of the pants? Not convinced.

Send the Mrs to fill up. And tell her to choose one or the other but not to tell you which. I bet you cant pick pick it accurately without measuring equipment...... No second thoughts dont do that, probably come back with diesel in it.


Just a thought, where does lpg fit in on the clean engine scale? I imagine it to be cleaner still? Although probably doesnt show as well due to starting cold on petrol....?