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| Simes Member Since: 30 Aug 2011 Location: Hinckley Posts: 964   
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Apart from US pints and gallons being teeny compared to our super fine imperial gallons - I think that US cheap gas is lower octane rated than ours - our standard unleaded is 95 Octane and I think the US has it as low as 88... In the UK we wouldn't run a lawnmower on that stuff! |
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15th Feb 2012 2:23pm |
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| ric355 Member Since: 02 May 2011 Location: Surrey, UK Posts: 302 |
Sorry I have to correct you on that! http://en.wikipedia.org/wiki/Flammability#...nflammable |
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15th Feb 2012 6:07pm |
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| Simes Member Since: 30 Aug 2011 Location: Hinckley Posts: 964
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Whoo-Hoo! |
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15th Feb 2012 8:46pm |
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..my disco 1 v8 gets 11 mpg round town and 13 to 14 on a run and the land cruiser gets 16 on a run and 13 while towing my comp landrover! the mrs gets 12 mpg in her 110 3.5 ...mind you she drives it like she stole it!| marsie Member Since: 30 Apr 2010 Location: sheffield Posts: 916  
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Never done a proper check on mine but i reset the trip every fill and never drop below 17 on my 2004 4.4. Last weekend did a 300 mile round trip and according to the computer averaged 21.7 |
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16th Feb 2012 9:46pm |
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,wasnt dawdling either 
| jim2RRs Member Since: 07 Feb 2012 Location: Genesee, Colorado Posts: 147  
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I wasn't talking about octane, I was talking about quality fuel; better detergent / additive packages. And, US octane ratings are different from yours; we use PON (Pump Octane Number) or AKI (Anti-Knock Index), compared to your RON (Research Octane Number). PON (or AKI) is the average of RON and MON (Motor Octane Number). So your 95 RON is my 91 PON. (more or less) The fuel available where I live has even lower octane rating; I see 85 at the pumps around here. At high altitude, an engine will run just fine with lower octane fuel, as there's less oxygen in the atmosphere, as well as lower atmospheric pressure. There is of course, a commensurate reduction in engine output power as well. Here at 7500 ft. ASL, we have about 75% of the oxygen in the air compared to sea level, many "lowland" visitors get "altitude sickness". When professional sports teams come here, most of the players are sucking O2 tanks. Same thing with bands; performers find themselves out of breath fairly quickly. An advantage for the sports teams: since the atmosphere is thinner here, baseballs and footballs fly further! Jim 2000 NAS HSE 2005 NAS HSE |
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16th Feb 2012 10:31pm |
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| daz62 Member Since: 27 Dec 2011 Location: Reading Posts: 201 
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I've just done Reading to Loch Lomond and back, about 900 miles motorway plus 500 miles country roads and my v8 returned 19.4 on the trip comp, brim to brim on the tank tells me I am getting 18.4. I do have a heavy right foot so am really pleased with those figures.
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19th Feb 2012 8:23am |
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