still need idle for a while to cool the turbo? - XBimmers

heverlee · 01-25-2013, 04:37 PM

Hi

Just wonder for 2013 X3, should it be left idle for a while after drive to let the coolant/oill to cool the turbo? I heard this was one major cause of turbo reliability in older ones like the VW 1.8T engine.

thanks

noka · 01-25-2013, 05:05 PM

Quote:

Originally Posted by heverlee

Hi

Just wonder for 2013 X3, should it be left idle for a while after drive to let the coolant/oill to cool the turbo? I heard this was one major cause of turbo reliability in older ones like the VW 1.8T engine.

thanks

I don't think it's necessary, especially during cold weather, if you haven't run it really hard but was just driving 'normally'.
Btw, I used to own a GTI with the 1.8T. Bulletproof and never a problem for many miles.

epiphone3 · 01-25-2013, 05:43 PM

The water pump is electric and the car runs it as required even after you've shut it down.

My belief is that this should help things. One thing, however, is I don't think the water is used to cool the turbo so it may not help at all.

lbjgh · 01-25-2013, 06:21 PM

hmm, what is this new fangled start/stop thing you guys talk about?

I suppose that would do more harm having a hot turbo cooking the oil while shut down for 30sec then restarted.

heverlee · 01-25-2013, 07:48 PM

this is really a good point.

Quote:

Originally Posted by lbjgh

hmm, what is this new fangled start/stop thing you guys talk about?

I suppose that would do more harm having a hot turbo cooking the oil while shut down for 30sec then restarted.

woodchuck1 · 01-26-2013, 12:00 PM

I asked the dealer about that. He said that with synthetic oil and modern turbo design and materials, the old turbocharger cool-down requirements are a thing of the past.

raleedy · 01-26-2013, 01:35 PM

Quote:

Originally Posted by heverlee

Hi

Just wonder for 2013 X3, should it be left idle for a while after drive to let the coolant/oill to cool the turbo? I heard this was one major cause of turbo reliability in older ones like the VW 1.8T engine.

thanks

Yes, they've intentionally designed the car so it'll self-destruct if operated normally.

Nahoa · 01-26-2013, 02:06 PM

jsmonet · 01-27-2013, 05:15 AM

All modern factory-turbo cars use water-cooled turbos.

Synthetic oil's one big difference from Dino is it cokes instead of sludging. Without the water cooling you would still need to idle or get a turbo timer.

If you have been beating on it, let it idle a minute(ish) before turning off I guess. It isn't that big of a deal

The X Men · 01-27-2013, 12:11 PM

I believe the water pump cools the turbo even after the car is shut off and the oil is only used to lubricate the turbo bearings.

FOACAD · 01-27-2013, 05:19 PM

Needing to let the turbo "cool down" isnt a big deal anymore like has been said.

It used to be a huge issue and was the reason why turbo timers were all the rage when people started boosting every car out there.

I have a big turbo MK4 GTI and after beating on it nice and good I do let it cool down before turning it off.

My 135i though? Nah, its good. Beat on it then idle maybe a minute once i get parked then off it goes, same will be the case for my X3 when it comes in a couple months.

Teemo Panda · 01-27-2013, 06:40 PM

the n20 engine cool down is already fast as it is.

Jurisprudent · 01-27-2013, 07:46 PM

I had a 1.8T Passat and did this routinely to protect it. I don't bother with the N55. The Passat had some absurdly small oil capacity, as I recall. That, coupled with the use of non-synthetic oil (at least initially), didn't help.

01-25-2013, 04:37 PM	#1
heverlee Enlisted Member Drives: X3 Join Date: Apr 2012 Location: AZ Posts: 45 iTrader: (0)	still need idle for a while to cool the turbo? Hi Just wonder for 2013 X3, should it be left idle for a while after drive to let the coolant/oill to cool the turbo? I heard this was one major cause of turbo reliability in older ones like the VW 1.8T engine. thanks
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01-25-2013, 06:21 PM	#4
lbjgh Major Drives: 2013 AW X3 M-Sport Join Date: Dec 2011 Location: North of Toronto Posts: 1,238 iTrader: (0)	hmm, what is this new fangled start/stop thing you guys talk about? I suppose that would do more harm having a hot turbo cooking the oil while shut down for 30sec then restarted. __________________ 2013, AW, xDrive35i, M Sport Package, Technology Package, Dynamic Comfort Package, Premium Package, 3M Clear Bra, Euro foglight switch, a few coded fixes

01-26-2013, 02:06 PM	#8
Nahoa Lieutenant Colonel Drives: F25 35i Mineral Silver/Black Join Date: May 2008 Location: Virginia Posts: 1,853 iTrader: (0)	__________________

01-27-2013, 05:15 AM	#9
jsmonet First Lieutenant Drives: 2012 135 Join Date: Nov 2011 Location: so cal Posts: 396 iTrader: (2)	All modern factory-turbo cars use water-cooled turbos. Synthetic oil's one big difference from Dino is it cokes instead of sludging. Without the water cooling you would still need to idle or get a turbo timer. If you have been beating on it, let it idle a minute(ish) before turning off I guess. It isn't that big of a deal __________________ 2012 135i. dinan stg3 \| ohlins dfv \| assorted rice \| hardest parker evAr

01-27-2013, 07:46 PM	#13
Jurisprudent Second Lieutenant Drives: '13 X3 35i Join Date: Oct 2007 Location: Charleston, SC Posts: 224 iTrader: (0)	I had a 1.8T Passat and did this routinely to protect it. I don't bother with the N55. The Passat had some absurdly small oil capacity, as I recall. That, coupled with the use of non-synthetic oil (at least initially), didn't help. __________________

01-25-2013, 05:43 PM	#3
epiphone3 Lieutenant Colonel Drives: 2013 BMW X3 35i Join Date: Oct 2005 Location: Calgary Posts: 1,641 iTrader: (0)	The water pump is electric and the car runs it as required even after you've shut it down. My belief is that this should help things. One thing, however, is I don't think the water is used to cool the turbo so it may not help at all.

01-26-2013, 12:00 PM	#6
woodchuck1 Private Drives: 2013 X3 X-drive 35i Join Date: Oct 2012 Location: United States Posts: 58 iTrader: (0)	I asked the dealer about that. He said that with synthetic oil and modern turbo design and materials, the old turbocharger cool-down requirements are a thing of the past.

01-27-2013, 12:11 PM	#10
The X Men Major Drives: 2012 535xi 2013 X3 35i Join Date: Mar 2012 Location: MA Posts: 1,264 iTrader: (0)	I believe the water pump cools the turbo even after the car is shut off and the oil is only used to lubricate the turbo bearings.

01-27-2013, 05:19 PM	#11
FOACAD Airborne! Drives: 2012 AW/CR 135i Msport Join Date: Nov 2011 Location: Schweinfurt, Germany Posts: 454 iTrader: (0)	Needing to let the turbo "cool down" isnt a big deal anymore like has been said. It used to be a huge issue and was the reason why turbo timers were all the rage when people started boosting every car out there. I have a big turbo MK4 GTI and after beating on it nice and good I do let it cool down before turning it off. My 135i though? Nah, its good. Beat on it then idle maybe a minute once i get parked then off it goes, same will be the case for my X3 when it comes in a couple months.

01-27-2013, 06:40 PM	#12
Teemo Panda * A BLUE PANDIAN SMURF * ♠ Drives: BMW X3, X5 Join Date: Jun 2011 Location: New Jersey (NJ) Posts: 642 iTrader: (0) Garage List 2013 BMW X3 [5.00]	the n20 engine cool down is already fast as it is.

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