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View Poll Results: Do you feel that a car feels more responsive while driving at night?
Yes, the car definitely feels quicker at night 27 90.00%
No dude, you are imagining things. 3 10.00%
Voters: 30. You may not vote on this poll

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Old 28th December 2010, 11:16   #1
GTO
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Default Ah, winter time. Engines are feeling better due to cooler air!

Engines perform better in colder weather. Primary reason : The density of cool air is a lot more than hot air. Thus, you end up with a superior burn, which results in better performance & efficiency.

Over the winter season, I've noticed a distinctly sharper throttle (compared to the harsh summers), the engine seems smoother and revv-happier. This effect is even more pronounced with diesels (especially the Jeep). It is around this premise that the cold-air-intake industry exists, and whatever the season, your engine will feel sharper at night than at noon.

Are you feeling it?
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Old 28th December 2010, 11:26   #2
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Default re: Ah, winter time. Engines are feeling better due to cooler air!

though there is increase in mileage in my TDCi, I did observe that it sounds like a tractor in winters, it does take quite sometime to calm down (one of the rare ocassions when things calm down after something heats up!!)

I did not feel any major change in throttle response though!!
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Old 28th December 2010, 11:26   #3
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Default re: Ah, winter time. Engines are feeling better due to cooler air!

Yes, my Scorpio runs smoother, a little quicker and I have a little better FE too.
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Old 28th December 2010, 11:28   #4
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Default re: Ah, winter time. Engines are feeling better due to cooler air!

No - My padmini refuses to start every two weeks - but when she does, she warms herself up slowly with the FFE gurgling and the after effects never stops to bring a smile on my face

The Palio and the Getz does feel better in winter
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Old 28th December 2010, 11:29   #5
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Default re: Ah, winter time. Engines are feeling better due to cooler air!

LOL, but in Delhi winter you need to warm up the car more. Atleast I do.

What you have in Mumbai is hardly winter - I know friends who swim even in December!!
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Old 28th December 2010, 11:33   #6
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Default re: Ah, winter time. Engines are feeling better due to cooler air!

Yes, my Manza QJD is at 20k km's now and I have started getting FE of about 23-24 on highway at cruising speeds of 90-110, no AC, 2 occupants etc. Once engine is warmed up, it's very smooth.

My only problem with NCR cold winters is that it takes hell lot of time (and km's) for engine to warm up. In my case, in mornings, it takes about 8 km for the temp gauge to move from bottom and another 4 km's for it to reach in the normal range. That's a total of 12 km's to get to optimal engine temp. And that's after a minute of idling.
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Old 28th December 2010, 11:37   #7
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Default re: Ah, winter time. Engines are feeling better due to cooler air!

Agree completely.
I love to drive during early mornings and Late nights.
And these days i feel,the throttle response of my Accent is so linear,and sharp.
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Old 28th December 2010, 11:37   #8
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Default re: Ah, winter time. Engines are feeling better due to cooler air!

Yes, my Getz Prime is running smoother, quieter and have become more fuel efficient of late. In addition to the winter, two other factors have also contributed: my switch to fully synthetic engine oil (0W40) a month ago (definitely), and a change to premium quality petrol (likely).

I have not driven our other car (WagonR, used by my wife) lately and cannot tell.

Last edited by asitkde : 28th December 2010 at 11:38.
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Old 28th December 2010, 11:37   #9
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Default re: Ah, winter time. Engines are feeling better due to cooler air!

Yes,there is a positive change.

I did a 500 km trip in my Trooper on Saturday and could feel the difference.My monster was calm and was cruising silently.

Not sure about the increase in FE.

Last edited by SILVERWOOD : 28th December 2010 at 11:38.
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Old 28th December 2010, 12:06   #10
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Default re: Ah, winter time. Engines are feeling better due to cooler air!

Along with that comes greater engine damage due to really cold starts I presume.
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Old 28th December 2010, 12:11   #11
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Default re: Ah, winter time. Engines are feeling better due to cooler air!

yeah, all my cars perform better in winters due to but obvious reasons.
but along with better performance comes more cold start wear and tear.
it takes time for engine to heat up. my morning idling times have increased from 1 min to 2 now.
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Old 28th December 2010, 12:17   #12
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Default re: Ah, winter time. Engines are feeling better due to cooler air!

Quote:
Originally Posted by narayan View Post
Along with that comes greater engine damage due to really cold starts I presume.
I am sure,most of us idle cars,till the RPM settles down to normal.
and yes synthetic oils offer better protection in such conditions.
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Old 28th December 2010, 12:33   #13
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Default re: Ah, winter time. Engines are feeling better due to cooler air!

Quote:
Originally Posted by GTO View Post
Primary reason : The density of cool air is a lot more than hot air.
... better... efficiency.

Are you feeling it?
The fuel density is also higher, the AC is turned off (no/minimal compressor load), and the engine oil maintains its viscosity better in cold weather. Result: The engine sounds more silent, revs more easily once warmed up, and gives better FE. My Scorpio returns about 1.5 km/l more, and the Swift about 2 km/l more than in summers.

Downside: Accelerated engine wear in the first two minutes in weather such as Delhi has, until the oil starts flowing smoothly (solution: let the engine idle for a minute before moving the car). Difficult morning starts in case of weak batteries or poor compression (or blown glow plugs in some diesels).

Edit: 6AM wakeups and 7AM starts don't make me feel better, even though engines might! And the Scorpio takes at least 4-5 km to warm up before the heater becomes effective. Brrr...

Last edited by SS-Traveller : 28th December 2010 at 12:36.
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Old 28th December 2010, 12:59   #14
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Default re: Ah, winter time. Engines are feeling better due to cooler air!

Quote:
Originally Posted by GTO View Post
Over the winter season, I've noticed a distinctly sharper throttle (compared to the harsh summers), the engine seems smoother and revv-happier. This effect is even more pronounced with diesels (especially the Jeep). It is around this premise that the cold-air-intake industry exists, and whatever the season, your engine will feel sharper at night than at noon.

Are you feeling it?
In Bombay minimum temperature is still higher than 20 C so it should not make that much difference within city.
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Old 28th December 2010, 13:05   #15
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Default re: Ah, winter time. Engines are feeling better due to cooler air!

I always felt the same with my old pal PALIO! with LPG. During winter nights, it performed as if it got an extra cylinder and turbo boost.
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