All the best ideas for getting the best miles per gallon

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Any experience with MPG at different speeds? 55 mph, 65 mph, 75 mph??? I might drive slower if I had a sense it would increase my mileage by a good amount.

Thanks,
Gil
I bought my LC in South San Francisco et drove to Ottawa...
Around 315 miles per tank in CA, AZ, UT, WY, CO, KS, MO, IL, IN, MI and OH (60 mph).
Around 270miles per tank in NV (70 or 75mph)
Around 270 miles here, if driving on highway (speed limit is 100 Km/h, but you can drive up to 118Km/h without being ticketed, 70/75 mph).

And, in any area, for better mileage, I let my wife drive the car :D
 
the drag coefficient is approximately independent of velocity for a given shape if you stay in the same regime (turbulent, quasi-incompressible etc).
Therefore the drag force is approximately proportional to the velocity squared.
Therefore the power required to overcome drag is approximately proportional to the velocity cubed.
Therefore if you double the speed the power needed to overcome drag is approximately 8x higher.

OK, I just checked Wikipedia and I got myself straight.
What I meant to say was.
"Amount of gas used per unit distance(mpg) to overcome air resistance will quadruple every time you double speed."

So, I guess in terms of power. If you are going 100 mph and your engine is doing full power at 100hp, and you are using 50% of that power on air drag. Then to double max speed to 200mph, you would need, 50hp * 8 + 50=450hp?

Anyway, here is the full Wiki article, if anbody is interested.
Fuel economy in automobiles - Wikipedia, the free encyclopedia
 
I've got an idea...
Time is over for cruise control (wich is not a good things in hill area)
We need Mpg controls
This thing should have two way of working
-based on the real time mpg
-based on the average mpg
And why not a "dual" third way... eg:
I could setup my car for an 18 average mpg and a minimum 10 real time mpg.
Of course, we need a TOA emergency switch (Tahoe On Approach)

just need somebody to develop it ... only 10% for me
 
Got 16.24 mpg, not exceeding 70 mph on the way to the coast in 100F heat. I think it was actually better however I had to do some stop and go driving prior to filling up again. These numbers are adjusted for 285/75 r 16s.
 
All, was just listening to Colorado's local Trouble Shooter guy (Tom Martino). At any rate he says that above 6 thousand feet using premium fuel is not necessary. Here in CO we have 85,87,91 and some stations with 93 octane. He suggested starting off at 85. If the engine runs poor add octane booster. Having run 91 since I purchased my rig, I have decided to change to 87 and see how it goes.

I will let you know.

Cheeper gas means more fun miles.
 
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On the acceleration thing, I have heard that it is actually better to accelerate quickly, the idea being to get into the engine's powerband ("cruising" speed) quicker, where it is most efficient. Thoughts, experiences, evidence?
 
I think you need to ensure that you are getting the full gallon that you paid for first. Then try to conserve your consumption of fuel which should save you even more money.


In the petroleum industry, when there is a transfer of custody for hydrocarbons, factors like temperature, flow, sediment etc. affect the quantity exchanged. Gas stations do no have the facility to calculate that they are actually selling you a full gallon regardless of all other factors affecting the quantity.

Some pointers I came across:

- always fill you tank early in the morning especially in hot weather to ensure that the fuel is cool and settled so you don't end up loosing some fuel after is exists the pump in the form of vapor. Late at night the fuel is still very hot because it gained heat all through the morning and needs the whole night to cool down basically.

- never fill from a station that is currently filling it's tanks or just filled it's tanks cause that stirs up the station's tanks and unwanted particles will end up in your gas tank (you end up paying for junk that clogs up your fuel filter).

- always fill your tank on the slowest flow speed to minimize vaporized fuel.
 
Many years ago, a car magazine took a bone stock '95 Honda Civic VX rated at 55 mpg highway and attempted to drive from San Francisco to Los Angeles and back, over 750 miles, on one 10 gallon tank of gas. They were able to achieve over 75 mpg average by accelerating to 45 mph then coasting to 15 mph and then back up to 45 mph the entire way. Of course this is not really practical on highway 5 but if you are really low on fuel and need to go the distance, this is one way to do it.
 
15.65 mpg on the last tank. 328 miles traveled. The most I have ever seen on the LC. This was 160 miles on the highway and 168 miles commuting.
 

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