Not Logged In Log In   Sign Up   Points Leaders
Follow Us    6:22 PM

Message Forum - Read Message

Category: Fuel Economy > Topics Add to favorite topics   Post new topicPost New Topic
Author Topic: Anyone shifting to neutral on downhill to save gas ? Back to Topics
Vibe03
Veteran Author
Toronto

Posts:470
Points:294,845
Joined:Aug 2007
Message Posted: Jul 21, 2010 9:12:55 AM

When it is not steep downhill and you don't need to brake the car to slow it down, coasting down around 55 mph at idling gives the engine a rest also save gas. Just not sure if the vacuum and other stuff are operating at normal level
REPLIES (newest first) Post a Reply
b899
Champion Author Connecticut

Posts:8,508
Points:2,380,015
Joined:Jul 2008
Message Posted: Mar 27, 2015 6:57:09 AM

no
stoihor
Champion Author San Bernardino

Posts:1,180
Points:1,118,395
Joined:Oct 2009
Message Posted: Mar 26, 2015 3:55:19 PM

no
StArrow68
Champion Author Oakland

Posts:6,637
Points:2,172,180
Joined:Apr 2003
Message Posted: Mar 26, 2015 12:43:06 PM

Explained many times, not stupid if you know what you are doing and in the right kind of vehicle. Manual shift has no issues going into neutral, no impact on transmission. As for not saving fuel, you might want to talk to the engineers that programed my instant MPG meter. One particular mile grade the meter reads 85mpg off the gas in gear and it reads 99mpg off the gas in neutral. In addition, when in gear the car engine brakes and speed declines, requiring some go pedal to maintain speed, mpg meter notices and declines further. Out of gear the speed does not decline and does not require any brakes to maintain speed. Just a matter of knowing what you are working with and they are probably right, it would be stupid for anyone who doesn't know how to do it safely.
Enjoy what you drive.

[Edited by: StArrow68 at 3/26/2015 12:44:13 PM EST]
dontuknowOH
Champion Author Ohio

Posts:4,040
Points:69,445
Joined:Aug 2009
Message Posted: Mar 26, 2015 10:24:25 AM

There sure isn't any benefit to shifting to N..... when going up-hill, unless the vehicle is traveling on Black Ice up the hill..... and then hydroplaning up-hill seems rather mute.
Off the go pedal saves fuel on the down-side only if, one doesn't then repeat and must soon travel upward another larger hill. I learned that driving a stick-shift during the "50's" and then I learned to also talk back to those "Pot Holes" only the(ones I Hit).... and Hoping that other stuff was still normal/OK!

Seems those P Holes have a vacuum of their own, they sucked way back then .... "1950"!
b899
Champion Author Connecticut

Posts:8,508
Points:2,380,015
Joined:Jul 2008
Message Posted: Mar 26, 2015 7:16:56 AM

no
RalphHightower
Champion Author South Carolina

Posts:6,794
Points:1,527,445
Joined:May 2011
Message Posted: Mar 26, 2015 6:12:20 AM

No
JoeKing
Champion Author Manitoba

Posts:17,482
Points:2,622,000
Joined:May 2005
Message Posted: Mar 25, 2015 11:24:48 PM

hahaha...right!
luvmyburgi
Champion Author Ohio

Posts:9,297
Points:1,745,665
Joined:Sep 2005
Message Posted: Mar 25, 2015 1:16:27 PM

Stupid idea
twt
Champion Author Virginia Beach

Posts:14,100
Points:1,790,660
Joined:Mar 2005
Message Posted: Mar 25, 2015 8:04:47 AM

Stupid idea. Hard, on the transmission.
b899
Champion Author Connecticut

Posts:8,508
Points:2,380,015
Joined:Jul 2008
Message Posted: Mar 25, 2015 7:40:03 AM

no
redfish67
Champion Author Dallas

Posts:2,280
Points:578,675
Joined:Dec 2013
Message Posted: Mar 22, 2015 10:35:23 AM

no
JohnCur
All-Star Author New Jersey

Posts:729
Points:591,785
Joined:Feb 2013
Message Posted: Mar 22, 2015 10:12:26 AM

no
JoeKing
Champion Author Manitoba

Posts:17,482
Points:2,622,000
Joined:May 2005
Message Posted: Mar 22, 2015 12:16:39 AM

no
RalphHightower
Champion Author South Carolina

Posts:6,794
Points:1,527,445
Joined:May 2011
Message Posted: Mar 19, 2015 6:12:50 AM

no
8_Ball2014
Champion Author North Dakota

Posts:2,064
Points:394,790
Joined:Jun 2014
Message Posted: Mar 19, 2015 1:37:09 AM

no
b899
Champion Author Connecticut

Posts:8,508
Points:2,380,015
Joined:Jul 2008
Message Posted: Mar 18, 2015 6:17:33 AM

no
StArrow68
Champion Author Oakland

Posts:6,637
Points:2,172,180
Joined:Apr 2003
Message Posted: Mar 18, 2015 4:07:32 AM

It might not save gas if you don't know what you are doing. According the the instant mpg reading in my car the mpg goes up about 15 to 20 mpg, then again, that would expect that the engineer that programmed the system knew what was up.
Enjoy what you drive, we do.
Straitliner
Champion Author Illinois

Posts:4,965
Points:1,043,155
Joined:Sep 2012
Message Posted: Mar 17, 2015 8:52:26 PM

It does not save gas.
dontuknowOH
Champion Author Ohio

Posts:4,040
Points:69,445
Joined:Aug 2009
Message Posted: Mar 17, 2015 2:13:59 PM

Well yes, I've noticed it takes a great effort for some drivers to even trip their turn signals on daily to make any drastic motion directional changes. Tea time......!
WEDDY
Champion Author Phoenix

Posts:6,790
Points:1,845,045
Joined:Oct 2009
Message Posted: Mar 16, 2015 9:48:51 AM

No
TimeWillTell14
Rookie Author Mobile

Posts:76
Points:1,068,480
Joined:Aug 2011
Message Posted: Mar 14, 2015 5:59:46 PM

Yes, but it gets old doing it after awhile.
redfish67
Champion Author Dallas

Posts:2,280
Points:578,675
Joined:Dec 2013
Message Posted: Mar 14, 2015 11:50:52 AM

no
FocusSVT
Champion Author Toronto

Posts:4,327
Points:1,828,610
Joined:Apr 2004
Message Posted: Mar 14, 2015 9:50:26 AM

Great idea and had been practicing it as my daily commute has a lot of slight incline that I shift to neutral and coast to the bottom and it ends up with a slightly higher speed than coasting in gear. Starting to see significant lower fuel consumption. Come Summer it will be more so
b899
Champion Author Connecticut

Posts:8,508
Points:2,380,015
Joined:Jul 2008
Message Posted: Mar 14, 2015 8:25:41 AM

no
Nanjkm
Rookie Author Ontario

Posts:38
Points:1,520
Joined:Dec 2008
Message Posted: Mar 11, 2015 7:27:23 PM

At times. My Dad did this and coasted down a hill, entering a small town, didn't realize he was over the speed limit and got his only ticket....he can laugh about it today...
Shockjock1961
Champion Author Illinois

Posts:24,952
Points:2,989,840
Joined:Apr 2006
Message Posted: Mar 10, 2015 4:40:11 PM

The nice thing about a hybrid, when going down hill, the engine turns off and all that kinetic energy its converted and stored in the battery to be used at the bottom...
xbAG
Champion Author California

Posts:2,968
Points:916,175
Joined:Jan 2012
Message Posted: Mar 9, 2015 9:53:51 PM

no, never even thought of it.
redfish67
Champion Author Dallas

Posts:2,280
Points:578,675
Joined:Dec 2013
Message Posted: Mar 9, 2015 10:56:38 AM

no
b899
Champion Author Connecticut

Posts:8,508
Points:2,380,015
Joined:Jul 2008
Message Posted: Mar 9, 2015 9:02:06 AM

no
hoopitup2000
Champion Author Virginia

Posts:2,091
Points:643,510
Joined:Jul 2013
Message Posted: Mar 9, 2015 6:46:32 AM

Yes . . . . .
reni194611
Sophomore Author Illinois

Posts:239
Points:349,430
Joined:Dec 2011
Message Posted: Mar 8, 2015 10:15:45 PM

nope
b899
Champion Author Connecticut

Posts:8,508
Points:2,380,015
Joined:Jul 2008
Message Posted: Mar 8, 2015 8:52:34 AM

no
cv
Champion Author Raleigh

Posts:18,599
Points:4,088,405
Joined:Oct 2003
Message Posted: Mar 8, 2015 6:59:27 AM

No need in my case.
dontuknowOH
Champion Author Ohio

Posts:4,040
Points:69,445
Joined:Aug 2009
Message Posted: Mar 7, 2015 11:40:59 AM

Too many PotHoles lately!
nickless
Champion Author PEI

Posts:17,339
Points:2,817,650
Joined:Aug 2007
Message Posted: Mar 7, 2015 12:59:53 AM

no
Vin63
Champion Author San Bernardino

Posts:3,005
Points:733,435
Joined:Oct 2007
Message Posted: Mar 6, 2015 9:26:39 AM

I have a common rail fuel injection, so I keep it gear and the fuel injection will shut off, so it saves more fuel than idling down hill.
ayokosh
Rookie Author New Jersey

Posts:14
Points:1,730
Joined:Feb 2015
Message Posted: Mar 5, 2015 10:31:38 PM

hahaha ...yes
Ibbeach
Rookie Author San Diego

Posts:3
Points:1,060
Joined:Feb 2015
Message Posted: Mar 5, 2015 10:05:46 PM

I have done this for years. While living in the mountain community of Pine Valley, east of San Diego, Ca. I can coast as much as 12- 15 miles heading west on I-8 just east of Descanso exit to past Harbinson Canyon, I'm convinced of it saving me Gallons = $$$$

Brian
juniperus98
Sophomore Author Alberta

Posts:116
Points:409,000
Joined:Oct 2011
Message Posted: Mar 5, 2015 9:10:54 PM

no
silverwing2005
Rookie Author Winnipeg

Posts:3
Points:4,510
Joined:Feb 2015
Message Posted: Mar 5, 2015 11:42:42 AM

"Leave it in gear. When your foot is off the throttle while in gear, NO gas is being burned. It takes more gas for the engine to idle in neutral."

I agree, but the vehicle doesn't coast as for or as fast when it is in gear. So it depends on how steep the slope is and what the speed limit is when it comes to leaving it in gear or not.
EZEd
Champion Author Birmingham

Posts:19,645
Points:4,014,645
Joined:Jun 2004
Message Posted: Mar 5, 2015 11:00:06 AM

Leave it in gear. When your foot is off the throttle while in gear, NO gas is being burned. It takes more gas for the engine to idle in neutral.
1RORO
Sophomore Author Richmond

Posts:144
Points:11,870
Joined:May 2004
Message Posted: Mar 5, 2015 10:49:41 AM

yes on my manuel trans,
94Rod
Veteran Author Orlando

Posts:270
Points:202,195
Joined:Oct 2014
Message Posted: Mar 5, 2015 6:49:15 AM

With my manual transmission Honda, I do occasionally.
GLM4205
Champion Author Toledo

Posts:6,918
Points:1,484,510
Joined:Dec 2010
Message Posted: Mar 5, 2015 5:35:21 AM

No
HideMKE
Champion Author Milwaukee

Posts:3,295
Points:797,050
Joined:Mar 2012
Message Posted: Mar 4, 2015 12:31:46 PM

never
carinthuist
Champion Author San Francisco

Posts:6,307
Points:1,066,275
Joined:Mar 2012
Message Posted: Mar 4, 2015 7:30:11 AM

no
BCNU
Champion Author British Columbia

Posts:18,066
Points:2,971,860
Joined:Mar 2005
Message Posted: Mar 4, 2015 5:52:28 AM

Time yo sell the car if you're thinking along those lines.
dontuknowOH
Champion Author Ohio

Posts:4,040
Points:69,445
Joined:Aug 2009
Message Posted: Mar 3, 2015 12:15:24 PM

What's really "Funny " is that most people labeled as "cheap-skates" they most always often have the extra fuel saved money then to spend on other tangible merchandise that lasts longer then tail-pipe fumes. I Love that benefit... Stay Happy! I drive automatics.... and still extend motion!
JCM54
Veteran Author Los Angeles

Posts:421
Points:163,250
Joined:May 2007
Message Posted: Mar 2, 2015 10:54:04 PM

You gotta have a manual transmission car and be true cheapskate.
StArrow68
Champion Author Oakland

Posts:6,637
Points:2,172,180
Joined:Apr 2003
Message Posted: Mar 2, 2015 9:13:44 PM

Old wives tales just won't die. Not stupid for anyone who knows what they are doing and not hard on a manual transmission since being in neutral is something they are designed for. Be specific but read back through the thread before posting common wisdom that has very little merit in the real world.
twt
Champion Author Virginia Beach

Posts:14,100
Points:1,790,660
Joined:Mar 2005
Message Posted: Mar 2, 2015 3:40:33 PM

Stupid. Hard on the transmission.
Post a reply Back to Topics