Optimal speed for the best MPG???
01-22-2004, 02:39 PM
#11
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Originally Posted by SSsuperchargedEi
well its best not to keep accelerating and deaccelerating at hiway speeds. i normally hit the cruise between 55 and 75, depending on the limit and weather. never bothered calcutating my mpg on a trip but ive seen 340 miles on a tank...
01-22-2004, 05:19 PM
#12
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the optimal speed for efficiency is determined by many things, i seriously doubt it'* 45-50 because not only does gearing and the engine play a part, but so does aerodynamics. say your going 1 MPH, your engine isn't using much fuel to go that fast (actually it'* probably idling), now you got 2 MPH using just about the same amount of fuel. while your using about the same amount of gas your going twice as fast and have just about doubled your efficiency (but it'* still shitty at that speed). now, say your going 70 and using X amount of fuel, and as before you go to double your speed to 140. you are using a heck of a lot more fuel at 140 than you are at 70. and this is were aerodynamics becomes a factor. the better the aerodynamics of the car the faster it'* optimal speed for efficiency. does that make sense or did you loose me when i said optimal the first time?
01-22-2004, 06:07 PM
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I drove with Cruise on at 50mph coming home from Canada, and on the yellow part of the fuel gauge alone, I got 90-100 miles out of it. I was surprised I made it home (I didn't have $$ for gas) 
01-22-2004, 07:42 PM
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In my case with the V8, I found 120 kph, doing 2200 RPM I got 8L/100km and I have a 70L or 20G tank....bear in mind 4.5L in one gallon and 120 kph is 74 mph...I'm with the PolarBear on this one 
01-22-2004, 08:58 PM
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Originally Posted by Sol
Originally Posted by SSsuperchargedEi
well its best not to keep accelerating and deaccelerating at hiway speeds. i normally hit the cruise between 55 and 75, depending on the limit and weather. never bothered calcutating my mpg on a trip but ive seen 340 miles on a tank...
01-22-2004, 09:05 PM
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Originally Posted by Sol
Holy crap. Do you have a larger tank or something?