Better Fuel Economy



What is the optimum highway speed to maximize fuel economy while maintaining a descent velocity?

Thursday 23 April 2009 @ 6:24 pm


I drive a 2000 Nissan Frontier with a V-6 engine that has the following characteristics in fifth gear with cruise control on the highway: @70 mph= 3000 rpm, @65 mph=2750 rpm, @60 mph= 2500 rpm, @45 mph= 2000 rpm. At what highway speed would fuel economy be maximized while still maintaining a descent speed. The highway I drive on has a speed limit of 70 mph.




Good ways to improve fuel economy?

Thursday 23 April 2009 @ 8:24 am


Hi. I should be getting a 2007 Nissan Frontier soon. I want the Crew Cab, V6, 6 speed. Now, I want to get good gas mileage, and have a good amount of power (I won’t be drag racing or anything, but I do want some good acceleration. Plus I will soon be volunteering for the local fire department.) Without voiding my warranty. Right now I’m consider a supercharger, cold air intake, a speed chip, and re-program my computer. How much would this improve my fuel economy, and would any of it void my warranty?

Originally posted 2009-03-25 04:35:59.





Why does my old car get poor fuel economy?

Thursday 23 April 2009 @ 8:24 am


As my car gets past 100K miles I am noticing that it is starting to get poor fuel economy. It’s all tuned up, air in the tires, and oil-changed, so why is performance suffering?

Originally posted 2009-03-25 15:54:26.





I want to upgrade to a diesel for towing our travel trailer. Need real world fuel economy numbers?

Thursday 23 April 2009 @ 8:24 am


Can anyone tell me what they get for fuel economy on thier 06-07 3/4 ton diesel (any make) and what motor do you have and is that with or without a programmer. Would love to know your solo mileage and your towing mileage and how much you tow. THANKS

Originally posted 2009-03-27 06:52:41.





Does an increase in electrical load on a car decrease fuel economy?

Thursday 23 April 2009 @ 8:24 am


Will driving the same car with the minimal electronics running have better fuel economy than the same car with considerably more lights added, high powered sound system, etc. ?

Originally posted 2009-03-25 02:13:42.





What is the best car out there with good EPA fuel economy?

Thursday 23 April 2009 @ 8:24 am


I want to know what kind of cars are best for performance, doesn’t break down easily, won’t cause any problems, good fuel economy, design and price. I heard Nissan was good and my Aunt and cousin own a Nissan Titan and Nissan Sentra.

Originally posted 2009-03-30 21:21:39.





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