COASTING -- & -- A/C vs WINDOWS - Page 3 - Fuelly Forums

Click here to see important news regarding the aCar App

Go Back   Fuelly Forums > Fuel Talk > General Fuel Topics
Today's Posts Search Click Here to Login
 
 
Thread Tools Display Modes
 
Prev Previous Post   Next Post Next
Old 07-05-2010, 09:39 AM   #1
Registered Member
 
shatto's Avatar
 
Join Date: Sep 2008
Posts: 345
COASTING -- & -- A/C vs WINDOWS

July 2010 Popular Mechanics, "The Truth About Energy" issue. Page 78.

Myth: Coasting to a stop saves gas.

Truth: A car actually consumes more fuel coasting in neutral than it does in gear. That's because absent any throttle input, an engaged engine reduces the flow of fuel to the injectors.

My Guess: Shifting to neutral while stopped takes a load off the system and saves fuel.



Myth: Driving with the A/C off and windows saves fuel.

Truth: It takes 2 to 8 hp to run the A/C, so when driving at city speeds, turning it off does save energy. But on a highway, open windows can significantly increase drag.

My Guess: I usually open the driver window and crack the passenger window a few inches at speeds below 45 MPH because it's less stuffy and the wind noise is acceptable.
__________________
I use and talk about, but don't sell Amsoil.
Who is shatto?
06 4.7 Tundra replaced a 98 Dakota 3.9.
623,000 miles on original engine and transmission, using Amsoil by-pass filters and lubrication.
+Everybody knows something you don't know.
+Artists prove truth can be in forms you don't understand.

Low-Risk Option Trader
Retired Pro-Hunter featured in; 'African Hunter', by James R. Mellon III. and listed in; Rowland Ward's Records of Big Game.
shatto is offline   Reply With Quote
 


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
2007 Lifan LF200GY-5 Review CoyoteX Motorcycles 16 11-21-2012 07:07 AM
MPG: gasoline, diesel, CNG, etc equivalency jhu General Fuel Topics 6 07-05-2009 03:08 PM
Manual conversion - will it change fuel economy??? landspeed Experiments, Modifications and DIY 9 05-16-2008 03:57 PM
Adjusting EACV Allen Screw? FritzR General Maintenance and Repair 2 02-08-2008 10:22 AM
Switchable power steering idea dieselbenz Introduce Yourself - New member Welcome 11 03-08-2007 04:58 PM

» Fuelly iOS Apps
Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 03:52 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.