In Canada we use the useless km/liter but we graduated from imperial gallons and still talk imperial when talking gallons by default. (Reminds me of the question from a university student from North Dakota I was talking to in Europe who asked me what we used for money in Canada (US dollars or British pounds)[:p]. Going to the States it makes their smaller gallon seem cheap at the gas pumps (it's still cheaper than ours, regardless how you measure it).
I have gotten a shade over 40 mpg (imp) travelling at 50 mph, tires 36 psi, 1/3 of the 10 hour trip was mountainous (up and down) the rest dead level. The car had been stored for 7 years prior to that trip but there didn't seems to be any bad effects like sticking rings or valves. The car had new plugs, wires, rotor, cap. So that is about as good as it gets.
The faster you go the lower the gas mileage almost in direct relationship that would look like a straight line edging downwards on a graph. At 60 mph it would be about 36 mpg range similar to Hasbeen's experience. My Integra (DOHC 16V)on the other hand has a sweet spot between 90 kph and 110 kph where the gas mileage is at maximum.
Any gas mileage numbers under any other conditions are meaningless as acceleration (heavy foot syndrome), coasting (hyper mileage techniques), traffic, number of stop lights, varying speeds in the roads all come into play and skew the results.
- - -TR7 Spider - - - 1978 Spitfire- - - - 1976 Spitfire - - 1988 Tercel 4X4 - Kali on Integra - 1991 Integra - Yellow TCT
