Before my recent trrip to Iowa i filled up my tank in my home state of Georgia. My Nissan Exterra estimated i would be able to go around 330-370 miles before i needed another tank. I'm not sure of the exact # it gave but it has always been in that range when i have gotten gas.
When i got fuel in Ky my car now said i had 406 miles to go before a new tank. I was able to go to Iowa and back to the same station and get more gas as i had more then enough gas to last. Again the car said i had 406 miles to go. When i got home a few days later i had to get gas agian and this time the car said i had 396 miles remaing.
I know these #'s have never been this high in my car in the 2 years i have owned it. My question is what gives here, did they add something to the gas to make it more fuel efficant? Is this just a summer thing? If so why is it not year round, getting 30miles more per tank is a huge deal to me.
2007-07-09 13:03:13 · 5 answers · asked by Anonymous in Cars & Transportation ➔ Other - Cars & Transportation
Because when the air is cold, it takes a little space, and when it is hot, it takes a lot of space. Therefore, in winter, more air can be fitted in the engine than in summer.
You probably have a lean mixture (a little fuel/too much air) during winter, and once you ride in summer, the mixture gets just perfect. (good ratio of fuel/air)
You could adjust your mixture in winter and summer to get the perfect mix.
This doesn't apply to fuel-injected engines.
2007-07-09 13:08:13 · answer #1 · answered by Bobis 2 · 1⤊ 0⤋
Don't worry highway only really helps fuel mileage. Warm temps allow the fuel mixture to lean out even more. 30 extra miles were mostly because you set and maintained a speed. Get back stop and go around town and that will kill down that mileage. Summer fuel has only about 5% advandage.
2007-07-09 13:11:40 · answer #2 · answered by John Paul 7 · 1⤊ 0⤋
I have noticed many times during long road trips at higher speed durations that it somehow cleans up the deposits that can collect in the cylinders during the months of local stop and go traffic. Taking road trips I think is a good thing for your car and makes a difference in the overall performance of the machine.
2007-07-09 13:13:42 · answer #3 · answered by Anonymous · 1⤊ 0⤋
One factor does not contribute to this. Maintaining your highway speed, hot air and other things contributes to more fuel efficient during the summer than the winter.
2007-07-09 13:21:56 · answer #4 · answered by Bizz 1 · 1⤊ 0⤋
They put additives in fuel for the winter so it don't freeze etc. And cars performance is effected
2007-07-09 13:14:59 · answer #5 · answered by Garfield 5 · 1⤊ 0⤋