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Originally Posted by KnifeEdge_2K1
jonavin can i ask about how you're getting 39 mpg !?!?!
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I assume that's meant for me.
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what % highway/local and what speed do you cruise at ??
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Around 30% - 40% highway. About 2/3 of that is secondary roads, typically a shade under 100km/h with some slower sections; those trips push toward 45mpusg. (The mileage 'sweet spot', at least for the standard, seems to be around 80km/h.)
My city driving is mostly small city -- traffic lights and stop signs and often slow, but rarely ever traffic jams -- and short trips. Checking my 5km to work today: Morning: 6.8L/100km = 35mpusg; Evening: 7.9L/100km = 30mpusg. Most of the difference there is probably attributable to the block heater. The block heater only actually saves a few cents (electricity isn't free either) so it may never pay for itself in gas, but reducing engine wear can't hurt.
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almost every single one of my tanks consist of two 200km highway journeys (from london to toronto)
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My 401 mileage is definitely lower than on small highways; in the mid/high 30s, I think. I drive 120km/h which is firmly inside the VTEC zone on the standard; if you have an automatic, though, you might be able to stay under 3400rpm without having to crawl along in the slow lane. Of course if you have to drive in rush hour you get 0mpg half the time.
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i use sunoco 87 which is 10% ethanol as ive heard that sunoco has the cleanest (lowest sulphur content) gas in canada
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I generally use whatever is cheap and convenient -- a 7-11 near home, a Canadian Tire near work, a Pioneer outside of town. Some month when the weather is more stable, I intend to see whether the major brands make any difference. I don't know whether it's still used at all here, but if you can get gas with MTBE instead of ethanol your mileage will be a few percent better.
The easiest, cheapest thing you can do to improve your mileage is to keep your tires inflated; as a bonus it improves handling a bit too. When the temperature drops the air condenses and pressure drops. Don't even think about trusting an air pump gauge; get whichever digital gauge is on sale this week, and measure your tires cold. The suggested pressure on the door jamb gives a soft ride; I'd suggest you go at least half way toward the maximum on the tire sidewall. I've been using 41psi front and 39psi rear.