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Author Topic: Anyone shifting to neutral on downhill to save gas ? Back to Topics
Vibe03

Veteran Author
Toronto

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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
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b899
Champion Author Connecticut

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Message Posted: Oct 25, 2014 9:24:36 AM

no
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contiki
Champion Author Ontario

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Message Posted: Oct 23, 2014 7:48:27 AM

Never........
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WEDDY
Champion Author Phoenix

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Message Posted: Oct 21, 2014 9:38:03 AM

No
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Awing1
Champion Author Ontario

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Message Posted: Oct 21, 2014 9:22:30 AM

No, wouldn't make a big difference.
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dontuknowOH
Champion Author Ohio

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Message Posted: Oct 21, 2014 9:06:38 AM

I often decide first; Is this really a hill, mountain, or a simple down-grade, then strait, curved, poor risky road, terrible road conditions or not.

Then traffic quantity nearby, weather conditions, visual data, all good/bad? Their travel speed also. To save fuel, even a small amount, one can't be a complete D... A.. about their driving habits, so they will or should know if everything else is normal stuff operating normally.

Most vehicles travel at 5 mph under, some at the posted limits, some over by 5...10 mph. on down grades, even up-grades as normal with conditions permitting.

The same gravity forces in effect, momentum in effect, often the drivers mind in effect, Well it happens that some minds can't handle the total load at times or make decent decisions for driving, and saving fuel isn't in their abilities either, just guessing! So level is better, naturally!

Level is much better for a lot of things and so are brakes for the unbalanced, whatever....... Stopped can be risky!.......!
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b899
Champion Author Connecticut

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Message Posted: Oct 21, 2014 8:17:24 AM

no
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contiki
Champion Author Ontario

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Message Posted: Oct 21, 2014 7:22:37 AM

no..............
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twt
Champion Author Virginia Beach

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Message Posted: Oct 21, 2014 5:49:13 AM

Another moron.
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StArrow68
Champion Author Oakland

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Message Posted: Oct 20, 2014 10:45:04 PM

Ah, depends on the slope, if coasting in neutral allows you you carry more speed for a longer period vs engine braking then you can back out of the gas earlier and still be safe at the point where you need to brake while going down an offramp. Knowing the capabilities of you vehicle is key, most don't have a clue.
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zippy3231
Champion Author Jacksonville

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Message Posted: Oct 20, 2014 2:47:05 PM

Coasting down hill to save fuels causes more brake loss due to no engine controlling speed! Just my thoughts!
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redfish67
Champion Author Dallas

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Message Posted: Oct 20, 2014 1:39:43 PM

no
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ChiefNolarama
Rookie Author Nebraska

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Message Posted: Oct 20, 2014 10:13:15 AM

Coast in my manual as much as possible.
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WEDDY
Champion Author Phoenix

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Message Posted: Oct 20, 2014 9:49:00 AM

No
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b899
Champion Author Connecticut

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Message Posted: Oct 20, 2014 8:31:21 AM

no
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redfish67
Champion Author Dallas

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Message Posted: Oct 18, 2014 10:12:34 AM

no
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Birkut
Veteran Author Quebec City

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Message Posted: Oct 18, 2014 6:27:33 AM

It is not the right thing to do, just let the car go.
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Jackson126
All-Star Author Virginia

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Message Posted: Oct 17, 2014 9:11:10 AM

no
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b899
Champion Author Connecticut

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Message Posted: Oct 17, 2014 9:06:26 AM

no
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contiki
Champion Author Ontario

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Message Posted: Oct 17, 2014 6:56:46 AM

Never.....
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weddy11
Champion Author Phoenix

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Message Posted: Oct 16, 2014 9:41:43 AM

No
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dontuknowOH
Champion Author Ohio

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Message Posted: Oct 16, 2014 8:54:25 AM

No hills lately, catch a few slight down-grades where momentum stays enhanced for an extended distance if disengaged, staying also at zoned speeds I gain mileage savings by staying off the fuel faucet(Go Pedal).

Correct Tire Pressure is the main essential to benefit on a momentum advantage. wind direction can help/hinder a savings, any exterior baggage kills momentum off(poor aerodynamics), that I seldom have while driving.

I never give up Engine compressing braking on a so called hill, that would cause extra brake pad wear by riding the brakes to maintain safe travel speed (silly),= more waste

Engine braking can cancel alternator load costs, some coolant fan costs, things like that when the acell.. pedal is released often, depending on the length of the interval time of motion/momentum. Geesh!...
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hoopitup2000
Champion Author Virginia

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Message Posted: Oct 16, 2014 6:32:11 AM

That's why I drive a manual.
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DaddyD302
All-Star Author Milwaukee

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Message Posted: Oct 16, 2014 2:50:03 AM

no
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redfish67
Champion Author Dallas

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Message Posted: Oct 15, 2014 10:06:32 AM

no
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hoopitup2000
Champion Author Virginia

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Message Posted: Oct 15, 2014 6:41:38 AM

Of course, it's a manual!!
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randy3116
Champion Author Tennessee

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Message Posted: Oct 15, 2014 5:39:29 AM

sometimes
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WilhamClouse
Champion Author Calgary

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Message Posted: Oct 15, 2014 1:00:33 AM

no
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PaylessKY
Champion Author Kentucky

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Message Posted: Oct 14, 2014 1:51:16 PM

Shifting an automatic while moving is not good unless its an emergency.
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Awing1
Champion Author Ontario

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Message Posted: Oct 14, 2014 12:24:26 PM

No
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dontuknowOH
Champion Author Ohio

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Message Posted: Oct 14, 2014 10:47:45 AM

I have more problems operating an umbrella.....They just aren't made for bicycles, tractors maybe!
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WEDDY
Champion Author Phoenix

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Message Posted: Oct 14, 2014 9:38:45 AM

No
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Tucsonhomes
All-Star Author Tucson

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Message Posted: Oct 13, 2014 2:17:04 PM

Nope
Cruise control
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b899
Champion Author Connecticut

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Message Posted: Oct 13, 2014 8:39:33 AM

no
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cujo1977
Champion Author Nashville

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Message Posted: Oct 13, 2014 7:18:48 AM

N
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StArrow68
Champion Author Oakland

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Message Posted: Oct 13, 2014 3:54:21 AM

Is giving the car a rev in your driveway, hard on the transmission? So let's see, the engine is running, the car is in neutral, and except that the wheels are turning, things are pretty much the same as sitting in the driveway at idle. What is hard on the Tranny? Common sense is sadly lacking.
Btw, in a manual car putting in the clutch and shifting to neutral disengages the engine from the drive train. All that is required to get back in gear is to rev match when you put the car back in gear. If you don't understand that statement, don't try it.



[Edited by: StArrow68 at 10/13/2014 3:59:18 AM EST]
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twt
Champion Author Virginia Beach

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Message Posted: Oct 13, 2014 3:29:54 AM

That, is hard on your transmission.
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krazkar
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Message Posted: Oct 12, 2014 11:46:41 PM

no
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dontuknowOH
Champion Author Ohio

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Message Posted: Oct 12, 2014 10:28:05 PM

Since my vehicles were designed to motivate either up-grade and down-grade, I then have no problems. I of course must drive those vehicles, when in motion, try to save fuel when possible, glance at the MPG indicator for a tell-tale of wind affecting my mileage maybe.

Some times I turn over a partial driving effort to the cruise control, depending on the traffic load and weather. All the rest of the operating stuff stays normal except the radio, needing a change and an occasional refueling. I did polish my headlamps back to luster on the two 14 year old rides, replaced one brake lamp bulb, aired tires a bit(daily temps have dropped), and that will save some fuel.

No hills lately but a few gravity de-cells in order to catch those going-green lights (in my favor). I'm ready for the $2.80 gal. prices! Excited!
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proudvet1
Rookie Author Atlanta

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Message Posted: Oct 12, 2014 10:07:10 PM

no
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stoihor
Champion Author San Bernardino

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Message Posted: Oct 12, 2014 7:05:51 PM

no.
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b899
Champion Author Connecticut

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Message Posted: Oct 12, 2014 3:34:51 PM

no
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Straitliner
Champion Author Illinois

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Message Posted: Oct 12, 2014 8:11:48 AM

Shifting into neutral while going down a hill is stupid.
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John_Doe
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Message Posted: Oct 12, 2014 6:24:53 AM

no
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WEDDY
Champion Author Phoenix

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Message Posted: Oct 11, 2014 5:15:56 PM

No
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StArrow68
Champion Author Oakland

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Message Posted: Oct 11, 2014 5:05:34 PM

It's good that everyone can have an opinion. Some are just not well supported by facts.
Shifting a manual into neutral is neither dumb nor ill advised, it is something the transmission can do without any problem. A car does not go out of control when out of gear, all the safety features still work, the brakes are fine and steering too. So what makes it dumb? For those that think it is dumb, they are probably accurate since they are unaware of the capabilities of a manual transmission car. For those that know what they are working with, not a big deal, really.
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Boyrr
Champion Author Allentown

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Message Posted: Oct 11, 2014 3:55:10 PM

nope, that's a dumb and dumber idea.
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Awing1
Champion Author Ontario

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Message Posted: Oct 11, 2014 3:48:01 PM

no
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b899
Champion Author Connecticut

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Message Posted: Oct 11, 2014 9:38:40 AM

no
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WEDDY
Champion Author Phoenix

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Message Posted: Oct 8, 2014 9:35:47 AM

No
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b899
Champion Author Connecticut

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Message Posted: Oct 8, 2014 8:32:59 AM

no
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