| thisisntjared |
08-02-2008 05:49 PM |
Quote:
Originally Posted by collegekid01
(Post 113617)
lol and it's like a strange safety measure too because it's a pain to do while your on the phone, I end up cutting my driving calls short cuz of it
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your talking on the phone while you are driving??
Quote:
Originally Posted by Project84
(Post 113674)
In my saturn, at a red light IN GEAR the gallons per hour is reading .45
when I slip it into neutral that drops to .32
So basically, in gear at a red light, I could sit there 2 hours and burn one gallon of fuel.
In neutral it would take 3 hours.
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so if one spends an hour total a week(10min a day on weekdays plus 5min a day on weekends) idling at traffic lights, assuming $4/gal, thats almost$2 in gas if you have it in gear and $1.33 if its in neutral, a savings of less than $.70.
keep in mind your average traffic light is between 1 and 3 minutes and since one often doesnt spend the full time at the traffic light, for my calculation i did 1 minute per light.
now a lot does depend on ones commute, but if one fills up once a month and drives in traffic like i do, thats $2.80 in savings for each fillup, which is .7 gallons. i know i drive a manual, but hypothetically if i were to have an auto and it would behave like your saturn and all else was equal and i left it in gear, i would be getting approximately 2 less mpg, assuming i fill up at 300miles and currently average 30mpg making the fill up 10gallons. wow that is one massive run on sentence that i dont feel like fixing.
going from 30 to 28mpg would suck!
Quote:
Originally Posted by theholycow
(Post 113696)
...but that requires you to be really good at predicting when the light will turn.
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if there is not a left hand turning lane for opposing traffic, then it is 3 seconds after when the traffic light before yours turns from yellow to red. of course you have to know the intersection, but if you do screw up and put the car in gear, bfd, you still havent gone anywhere because your foot could still be on the brake. |