Wait before shutting off the engine

Fegelein · 06-22-2018, 12:10 PM

Quote:

Originally Posted by Can-am

Do you guys wait a little bit before shutting off the engine after a ride ?

I heard people saying that for the turbos , it was better to wait 30 secondes , other says 2 minutes , and also some say that you don't need to wait at all.

Curious to know how you guys a treating your engines

I personally wait close to 2 minutes.

Sounds way to anal to me and who the hell has the patience?! lol

avi8tir · 06-22-2018, 12:19 PM

for what it's worth... I have flown several aircraft types that had turbo charged (turbo normalized) engines and there are usually always cooling procedures before you shut down the engine. that could be as simple as letting it run at idle for a period of time until specific temperatures are within a certain range.

Probably has nothing to do with this but I thought I would mention!

Phatcat · 06-22-2018, 02:21 PM

Quote:

Originally Posted by lemetier

There's no need for sake of the turbos. Car has 4 independent electric coolant pumps just for them and will run for up to 30mins after shutdown. If it's really hot, the aux cooling fans will run as well for up to 12 mins.

This.

Aronis · 06-23-2018, 12:55 PM

Quote:

Originally Posted by Fegelein

Sounds way to anal to me and who the hell has the patience?! lol

MADE MY WEEK!!!!!!!!!!!!!

Mike

capsfan · 06-23-2018, 06:43 PM

When you shut down the F90 the fans kick on big time, you can feel the heat getting blown out even on shorter drives.

Alberta · 06-24-2018, 11:01 AM

The fans are cooling the engine ...

Not much to do with the turbos.

elitex · 06-24-2018, 11:04 AM

Nope. No need. Cooling fans run for a long time after shut down.

Drciop · 08-11-2022, 11:54 AM

Quote:

Originally Posted by Can-am

Do you guys wait a little bit before shutting off the engine after a ride ?

I heard people saying that for the turbos , it was better to wait 30 secondes , other says 2 minutes , and also some say that you don't need to wait at all.

Curious to know how you guys a treating your engines

I personally wait close to 2 minutes.

I after a ride wait 5 mins,even i notice the fans works after shutting down the engine
Is that also for the turbos?

boost3dx · 08-11-2022, 12:37 PM

Quote:

Originally Posted by Can-am

The fans are cooling the engine ...

Not much to do with the turbos.

And what do you think cools the turbos?

The same shit that cools the engine.

So yes, the fans and I assume the pumps for oil/coolant are running to cool down the entire system.

secretariat · 08-11-2022, 03:55 PM

I heard it's a good idea to let the RPM's drop before driving off from a cold start.

boost3dx · 08-11-2022, 04:00 PM

Quote:

Originally Posted by secretariat

I heard it's a good idea to let the RPM's drop before driving off from a cold start.

The cold start for our cars is just an emissions thing to warm up the cats quicker. Just don't start your car cold and drive it hard, you're fine. Cold start delete is actually a popular mod to do if you don't have cats.

AHall · 08-11-2022, 06:37 PM

I usually wait until my idle drops before I put the car in reverse to back out the garage. It drops pretty quick.

boost3dx · 08-11-2022, 06:40 PM

Quote:

Originally Posted by AHall

I usually wait until my idle drops before I put the car in reverse to back out the garage. It drops pretty quick.

You really don't need to do this.

gblansten · 08-11-2022, 07:50 PM

I just drive my car and enjoy it. I turn it off when I have arrived at my destination. I gun my engine on startup if that moves me. I will not worry or be anxious about my engine.

norbtx · 08-11-2022, 09:47 PM

I also keep my hood open to let the hot air out.

Evil Derboy · 08-12-2022, 03:09 AM

The car literally sounds like a jet engine for 5 minutes after you switch the engine off. Obvious proof that there is a cooling system in place to cool things down after you switch the engine off.

So why would you do this?

Evil Derboy · 08-12-2022, 04:12 AM

Quote:

Originally Posted by Gassy

I've always heard- but never verified with an authoritative source- that idling for a minute or two before shutting off allows circulating oil to return to the pan and prevent gumming up the valves and other oil lubricated parts.

So, when the engine is at idle, all of the oil drops to the pan, leaving everything un-lubricated. Yeah that sounds like a logical mechanical design choice...

JOHNBMWM5 · 08-12-2022, 05:31 AM

Quote:

Originally Posted by Can-am

Do you guys wait a little bit before shutting off the engine after a ride ?

I heard people saying that for the turbos , it was better to wait 30 secondes , other says 2 minutes , and also some say that you don't need to wait at all.

Curious to know how you guys a treating your engines

I personally wait close to 2 minutes.

NOPE the car will run the fans and oil pump if needed after you shut down, don't wast the petrol lol.

JOHNBMWM5 · 08-12-2022, 05:32 AM

Quote:

Originally Posted by norbtx

I also keep my hood open to let the hot air out.

I do this after a run round the track.

Alberta · 08-12-2022, 05:39 AM

Quote:

Originally Posted by AHall

I usually wait until my idle drops before I put the car in reverse to back out the garage. It drops pretty quick.

That's what I'm doing too.

Engaging D (or R) while cold start is doing it's thing puts stress on the gearbox, at least that's what I think.

PDOT · 08-12-2022, 10:40 AM

Quote:

Originally Posted by Can-am

Quote:

Originally Posted by AHall

I usually wait until my idle drops before I put the car in reverse to back out the garage. It drops pretty quick.

That's what I'm doing too.

Engaging D (or R) while cold start is doing it's thing puts stress on the gearbox, at least that's what I think.

After doing 2Day M school I started letting it run for a few minutes. The on-site guys said it makes a difference and they deal with cars being beat down

boost3dx · 08-12-2022, 10:57 AM

Quote:

Originally Posted by PDOT

After doing 2Day M school I started letting it run for a few minutes. The on-site guys said it makes a difference and they deal with cars being beat down

it really doesn't matter lol.

Tracking cars and getting them beat on has nothing to do a simple cold start.

Best thing to do? Put it in gear and just fucking drive.

06-22-2018, 12:19 PM	#24
avi8tir Captain 397 Rep 858 Posts Drives: ///M Join Date: Oct 2011 Location: SNA IAH AMS iTrader: (0)	for what it's worth... I have flown several aircraft types that had turbo charged (turbo normalized) engines and there are usually always cooling procedures before you shut down the engine. that could be as simple as letting it run at idle for a period of time until specific temperatures are within a certain range. Probably has nothing to do with this but I thought I would mention!
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06-23-2018, 06:43 PM	#27
capsfan Private 28 Rep 90 Posts Drives: 1st Edition M5 - incoming Join Date: May 2018 Location: East iTrader: (0)	When you shut down the F90 the fans kick on big time, you can feel the heat getting blown out even on shorter drives.
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06-24-2018, 11:01 AM	#28
Alberta Lieutenant Colonel 2035 Rep 1,843 Posts Drives: F90 Join Date: Aug 2015 Location: somewhere iTrader: (0)	The fans are cooling the engine ... Not much to do with the turbos.
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06-24-2018, 11:04 AM	#29
elitex . 1232 Rep 1,918 Posts Drives: 22 M8C Coupe, 21 X5MC Join Date: Mar 2012 Location: Atlanta iTrader: (0) Garage List 2020 Mercedes C63S ... [0.00] 2021 X5M Competition [0.00]	Nope. No need. Cooling fans run for a long time after shut down. __________________ Previous 21 X5M MBB, 20 Evora GT, 20 C63S Coupe,19 X5 50i, 18 Giulia QV, 18 M5, 17 Evora 400, 18 LX570, 17 GT350,18 M4 Comp,17 R8 V10 ,17 M3 Comp,17 GT350,16 Escalade Plat ESV, 16 570S,16 911 GTS,15 M5, 15 LX570, 13 M5,13 Viper,14 Cayman S,13 M3,13 S4,10 RX8,12 A4,10 G37, 04 Mini Cooper S, 08 Scion TC, 06 Altima V6, 05 Altima, 01 Altima, 00 Altima, 94 Explorer, 92 Toyota Pickup, 98 Altima
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08-11-2022, 03:55 PM	#32
secretariat Major 954 Rep 1,457 Posts Drives: 2016 X5M Join Date: Dec 2012 Location: New York iTrader: (0)	I heard it's a good idea to let the RPM's drop before driving off from a cold start.
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08-11-2022, 06:37 PM	#34
AHall Lieutenant Colonel 982 Rep 1,797 Posts Drives: 1993 Nissan 240sx Join Date: Oct 2008 Location: Frisco, Texas iTrader: (0)	I usually wait until my idle drops before I put the car in reverse to back out the garage. It drops pretty quick.
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08-11-2022, 07:50 PM	#36
gblansten Brigadier General 1977 Rep 4,225 Posts Drives: 23 Tesla S Plaid Join Date: Sep 2007 Location: Thick ascending limb iTrader: (0)	I just drive my car and enjoy it. I turn it off when I have arrived at my destination. I gun my engine on startup if that moves me. I will not worry or be anxious about my engine.
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08-11-2022, 09:47 PM	#37
norbtx Lieutenant 337 Rep 578 Posts Drives: 2019 BMW M5 Join Date: Sep 2018 Location: Houston Texas USA iTrader: (0)	I also keep my hood open to let the hot air out. __________________ 2019 M5 - Marina Bay Blue/Silverstone
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08-12-2022, 03:09 AM	#38
Evil Derboy Lieutenant 271 Rep 425 Posts Drives: E92 M3 Join Date: Aug 2017 Location: . iTrader: (0)	The car literally sounds like a jet engine for 5 minutes after you switch the engine off. Obvious proof that there is a cooling system in place to cool things down after you switch the engine off. So why would you do this?
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