Dumb question - when do you use N in an auto?

Dumb question - when do you use N in an auto?

Author
Discussion

Plinth

713 posts

88 months

Sunday 22nd July 2018
quotequote all
Pommy said:
Plinth said:
I put my Discovery in neutral when I need to push it
EFA
Very good - I wondered how long it would take for someone to write that laugh
To be fair to the Disco, it has only broken down once in 16 years – turned out to be a soldered joint that had failed in the starter circuit.
I put it in neutral when it was towed (slowly) to the garage, though.

Pommy

14,259 posts

216 months

Sunday 22nd July 2018
quotequote all
Plinth said:
Pommy said:
Plinth said:
I put my Discovery in neutral when I need to push it
EFA
Very good - I wondered how long it would take for someone to write that laugh
To be fair to the Disco, it has only broken down once in 16 years – turned out to be a soldered joint that had failed in the starter circuit.
I put it in neutral when it was towed (slowly) to the garage, though.
Hahaha to be fair ive never seen a broken down one by the side of the road but thats because i thought the owners couldnt get them off the driveway wink

Ill take a leaf out of your Disco's book and stop now.

buggalugs

9,243 posts

237 months

Sunday 22nd July 2018
quotequote all
My torque converter auto uses about half as much fuel at idle in N as D, also the idle is a bit quieter. So I tend to knock it to N if I'm stopped for more than a few seconds.

I do the same as that other chap too when parking its N, handbrake on to take the strain then P, no point having strain through the drivetrain when they when to the trouble of putting bakes on the wheels, also if you never use the handbrake when the car's a few years old there's a fair change you'll end up having to replace bits at MOT time.

Pommy

14,259 posts

216 months

Sunday 22nd July 2018
quotequote all
buggalugs said:
My torque converter auto uses about half as much fuel at idle in N as D, also the idle is a bit quieter. So I tend to knock it to N if I'm stopped for more than a few seconds.

I do the same as that other chap too when parking its N, handbrake on to take the strain then P, no point having strain through the drivetrain when they when to the trouble of putting bakes on the wheels, also if you never use the handbrake when the car's a few years old there's a fair change you'll end up having to replace bits at MOT time.
What a load of bks.

" if you never use the handbrake when the car's a few years old there's a fair change you'll end up having to replace bits at MOT time"

This is just nonsense.

What bits?

Half as much fuel in N as in D? What like half a pipettes drop worth.





Matthen

1,292 posts

151 months

Sunday 22nd July 2018
quotequote all
Pommy said:
buggalugs said:
My torque converter auto uses about half as much fuel at idle in N as D, also the idle is a bit quieter. So I tend to knock it to N if I'm stopped for more than a few seconds.

I do the same as that other chap too when parking its N, handbrake on to take the strain then P, no point having strain through the drivetrain when they when to the trouble of putting bakes on the wheels, also if you never use the handbrake when the car's a few years old there's a fair change you'll end up having to replace bits at MOT time.
What a load of bks.

" if you never use the handbrake when the car's a few years old there's a fair change you'll end up having to replace bits at MOT time"

This is just nonsense.

What bits?

Half as much fuel in N as in D? What like half a pipettes drop worth.
No doubt mechanisms within the handbrake setup that have seized due to lack of use. Also, half a pipettes worth every time you stop is several tanks worth of fuel over the lifetime of the car. This equates to time not spent in a petrol station. Seems like a free win to me.


But I drive a manual, so to me moving a lever one notch from D to N and back again doesn't seem like a particularly onerous task. Who knows though, maybe i'm wrong.

Pommy

14,259 posts

216 months

Sunday 22nd July 2018
quotequote all
Matthen said:
Pommy said:
buggalugs said:
My torque converter auto uses about half as much fuel at idle in N as D, also the idle is a bit quieter. So I tend to knock it to N if I'm stopped for more than a few seconds.

I do the same as that other chap too when parking its N, handbrake on to take the strain then P, no point having strain through the drivetrain when they when to the trouble of putting bakes on the wheels, also if you never use the handbrake when the car's a few years old there's a fair change you'll end up having to replace bits at MOT time.
What a load of bks.

" if you never use the handbrake when the car's a few years old there's a fair change you'll end up having to replace bits at MOT time"

This is just nonsense.

What bits?

Half as much fuel in N as in D? What like half a pipettes drop worth.
No doubt mechanisms within the handbrake setup that have seized due to lack of use. Also, half a pipettes worth every time you stop is several tanks worth of fuel over the lifetime of the car. This equates to time not spent in a petrol station. Seems like a free win to me.
No doubt? Actually i doubt very much.

Half a pipette is 5ml of which in a 60 litre tank would equatte to 120,000 'pipettes' worth. You could be sat standing 20 times a day every day at traffic lights and it would take 6000 days or 16 years for you to get the benefit of saving 1 tank of fuel, or at £90 a tank or about 1 penny a day, if that.

If it takes 2 seconds for every D to N to D movement and you spend 40 seconds a day, or 4 hours a year to save £3.65 - or 91p an hour, or over 16 years you spend 64 hours to save £90.

You basically spend the equivalent of a week and a half of your life extra at work for £90.

corozin

2,680 posts

271 months

Sunday 22nd July 2018
quotequote all
I often put the car in N when I know it's going to be sitting stationary for 20-30 seconds, such as when sitting at traffic lights. Probably no good reason for doing that other than my own perception that it's slightly kinder to the torque convertor than having it push against the engine when you don't need to.

Pica-Pica

13,804 posts

84 months

Sunday 22nd July 2018
quotequote all
Ninja59 said:
Burwood said:
Who puts their auto in Park and doesn’t use the electronic/hand brake? My FIL does this. Can’t be good for the car. It creates a back and forth lurching effect.
Most modern autos wont allow this scenario.

On turn off or door opening they go into park and EPB on.
Also, when driver’s seat belt is undone when stopped (that scenario still allows you to override and drive away in drive with seat belt off).

anonymous-user

54 months

Sunday 22nd July 2018
quotequote all
corozin said:
I often put the car in N when I know it's going to be sitting stationary for 20-30 seconds, such as when sitting at traffic lights. Probably no good reason for doing that other than my own perception that it's slightly kinder to the torque convertor than having it push against the engine when you don't need to.
From what I understand the torque converter is designed to work at zero speed as its only a fluid link so you're not causing any wear at all, whereas if you change into neutral you are putting wear on the clamping band linings. I doubt it's worth worrying about either way but having watched the wavy hands american guy video ages ago I never use neutral and just leave the car in drive at all times (aside from when parked ofc).

Mr E

21,618 posts

259 months

Sunday 22nd July 2018
quotequote all
Tim bo said:
Mr E said:
When I forget which car I’m in, try to wipe the screen and put the damn thing in nutral at 70mph.

Yes I felt stupid
Yes, the car will let you reselect drive at speed
No, I haven’t done it again
Mercedes I'm guessing.
Ding. I like the gear selector placement apart from that.
For additional amusement, I also drive a leaf which had a forward/reverse selector (it’s not a gearbox) where you’d usually find the gear selector. It’s round and silver. And similar to the command wheel in the merc.
Guess how often I’ve sat in the merc wondering why it’s not in drive, and why the music is changing while I’m trying to get a gear...

Mike335i

5,007 posts

102 months

Sunday 22nd July 2018
quotequote all
Pommy said:
No doubt? Actually i doubt very much.

Half a pipette is 5ml of which in a 60 litre tank would equatte to 120,000 'pipettes' worth. You could be sat standing 20 times a day every day at traffic lights and it would take 6000 days or 16 years for you to get the benefit of saving 1 tank of fuel, or at £90 a tank or about 1 penny a day, if that.

If it takes 2 seconds for every D to N to D movement and you spend 40 seconds a day, or 4 hours a year to save £3.65 - or 91p an hour, or over 16 years you spend 64 hours to save £90.

You basically spend the equivalent of a week and a half of your life extra at work for £90.
Yeah, but how much did it cost you to figure that out? hehe

Matthen

1,292 posts

151 months

Sunday 22nd July 2018
quotequote all
Pommy said:
Matthen said:
Pommy said:
buggalugs said:
My torque converter auto uses about half as much fuel at idle in N as D, also the idle is a bit quieter. So I tend to knock it to N if I'm stopped for more than a few seconds.

I do the same as that other chap too when parking its N, handbrake on to take the strain then P, no point having strain through the drivetrain when they when to the trouble of putting bakes on the wheels, also if you never use the handbrake when the car's a few years old there's a fair change you'll end up having to replace bits at MOT time.
What a load of bks.

" if you never use the handbrake when the car's a few years old there's a fair change you'll end up having to replace bits at MOT time"

This is just nonsense.

What bits?

Half as much fuel in N as in D? What like half a pipettes drop worth.
No doubt mechanisms within the handbrake setup that have seized due to lack of use. Also, half a pipettes worth every time you stop is several tanks worth of fuel over the lifetime of the car. This equates to time not spent in a petrol station. Seems like a free win to me.
No doubt? Actually i doubt very much.

Half a pipette is 5ml of which in a 60 litre tank would equatte to 120,000 'pipettes' worth. You could be sat standing 20 times a day every day at traffic lights and it would take 6000 days or 16 years for you to get the benefit of saving 1 tank of fuel, or at £90 a tank or about 1 penny a day, if that.

If it takes 2 seconds for every D to N to D movement and you spend 40 seconds a day, or 4 hours a year to save £3.65 - or 91p an hour, or over 16 years you spend 64 hours to save £90.

You basically spend the equivalent of a week and a half of your life extra at work for £90.
The time taken to operate the gearbox 0. D to N you're sat at traffic lights doing nothing, and would be either way. N to D... guess what, you're sat at the traffic lights, watching people pull away/light turn amber. So you're either sat doing jack, or moving your arm about. Net time lost, 0. Further, 20 times a day is very conservative; if you're driving in a city, it'd be closer to 20 times a trip.



donkmeister

8,174 posts

100 months

Sunday 22nd July 2018
quotequote all
Curtailment said:
When you brake to a stop in almost any automatic bus or lorry, it goes into neutral after a second or so, and you feel it stop trying to tug against the brake. When you try driving off it re-engages the gear, nearly seamlessly.

I've never understood why automatic cars don't do the same.
I don't know how common this is, but certainly the Aisin Warner AF40-6 I had in my old Vectra (along with other GM cars as well as 6 and 8-cylinder Volvos and I think big transverse engine Toyotas) did exactly this over 10 years ago and you'd notice the idle rpm increase slightly as the load was taken off. The 7G in my old Merc doesn't seem to though.

Wills2

22,841 posts

175 months

Sunday 22nd July 2018
quotequote all
Pommy said:
Bloody hell just leave it in D and foot on the brake when stopped.

All this ‘put it in N’ when stationary and handbrake on is a load of tosh
Agreed, what farce over nothing.


stuartmmcfc

8,664 posts

192 months

Sunday 22nd July 2018
quotequote all
The only time I put it into N at lights was if I wanted to rev the engine and leer suggestivelyat a Lady.

vikingaero

10,343 posts

169 months

Sunday 22nd July 2018
quotequote all
Wills2 said:
Pommy said:
Bloody hell just leave it in D and foot on the brake when stopped.

All this ‘put it in N’ when stationary and handbrake on is a load of tosh
Agreed, what farce over nothing.
The farce is that people on t'internet that probably never drive autos are getting worked up over it. I still maintain: Do it if you feel it suits you, your driving style and the circumstances.

buggalugs

9,243 posts

237 months

Sunday 22nd July 2018
quotequote all
Pommy said:
buggalugs said:
My torque converter auto uses about half as much fuel at idle in N as D, also the idle is a bit quieter. So I tend to knock it to N if I'm stopped for more than a few seconds.

I do the same as that other chap too when parking its N, handbrake on to take the strain then P, no point having strain through the drivetrain when they when to the trouble of putting bakes on the wheels, also if you never use the handbrake when the car's a few years old there's a fair change you'll end up having to replace bits at MOT time.
What a load of bks.

" if you never use the handbrake when the car's a few years old there's a fair change you'll end up having to replace bits at MOT time"

This is just nonsense.

What bits?

Half as much fuel in N as in D? What like half a pipettes drop worth.
Handbrake - It's hard for me to comprehend how someone on a car forum would not get this but it's a mechanical system made of materials that rust so you can imagine that if you don't use it for a few years it's not going to work that well any more.

Fuel - 0.2 gal/hr vs 0.4 gal/hr it works out to roughly £1/hr difference when idling in my car, not that I'd bothered to work it out prior to the arrival of your curmudgeonliness, I just like to think about what I'm doing when I'm driving, I can get pleasure from driving efficiently just as I can from stringing a good set of corners together, which when you follow it through often ends up being the same thing.

I thought the use of the word bks was a bit strong for an opening argument, especially one with as little substance as yours.

Wills2

22,841 posts

175 months

Sunday 22nd July 2018
quotequote all
vikingaero said:
Wills2 said:
Pommy said:
Bloody hell just leave it in D and foot on the brake when stopped.

All this ‘put it in N’ when stationary and handbrake on is a load of tosh
Agreed, what farce over nothing.
The farce is that people on t'internet that probably never drive autos are getting worked up over it. I still maintain: Do it if you feel it suits you, your driving style and the circumstances.
Never felt the need to do it in any of the DCT/ZF autos I've had all 15 of them it's a non issue.



.

hyphen

26,262 posts

90 months

Sunday 22nd July 2018
quotequote all
Wills2 said:
Pommy said:
Bloody hell just leave it in D and foot on the brake when stopped.

All this ‘put it in N’ when stationary and handbrake on is a load of tosh
Agreed, what farce over nothing.
A long time to be pressing the brake pedal when sat at a level crossing...

And light bulbs are always a bh to change, so the less used the better wink

EarlOfHazard

3,603 posts

158 months

Sunday 22nd July 2018
quotequote all
"Put it in H!"