On my cars (turbo) I always drive sensible for last mile or so before my known stopping point and then idle the car at rest for a minute or so to avoid oil starvation to a turbo still spinning at colossal rpm.

Not sure if this has been asked but on a performance car with a turbo & stop/start system, how is the life of the turbo potentially effected?

Do you mean when on the race track and cooling down,

because at UK road speeds you are hardly going to be giving much laldy to the Turbo, and if the car is a Sporty Model 

& has Stop Start then the Water Pump / Coolant System is going to be dealing with the Engine and the Turbo

chosen and used by the engineers and designed as suitable for the car with Stop / Start.

 

If they have a Fundamental Design or Component Error, then surely it will show on Tracked cars before a road use car has issues.

 

If you are driving in a spirited manner and need to stop like at roadworks without warning,

have the Stop / Start switched off maybe.

Maybe have Stop / Start switched off all the time.

Edited 13 July, 201510 yr by goneoffSKi

Cheers just curious but the engineers must look into this as you say

Being old school I've always treated my cars with mechanical sympathy. Never rev above 2/2.5k until properly warmed and as above always avoid "spirited" driving if I know my destination/stop is coming up.

Are we talking Modern Diesels and Petrols now, since we are talking ones with Stop / Start.

 

You would still do that surely and let the oil warm up.

Not sure on only 2,000 - 2,500 rpm with a Turbo Petrol, some people want to get on and move at traffic speeds once they leave the town and get on roads with NSL's and some modern engines can go 5-10 miles before the oil 

is near normal operating temperature for the oil.

 

As to stopping the car and turning it off, then know you are not going to damage the turbo or starve it of oil when using it on the road.

& 1 mile of a cool down is not going to drop the temperature very much of Engine Coolant, Oil or Components if the car was being roasted,

Edited 13 July, 201510 yr by goneoffSKi

Id just turn the stop-start off tbh.

If you're driving in a place where a stop start system would work then you're probably driving so slowly the turbo will hardly get used.

It all very much depends on your commute.

 

There are quite a few places on my 60 mile commute where I can go from 0mph to 60-70mph and back down to 0mph.

 

On my diesel Superb the turbo is oil cooled so if the engine is turned off and the oil stops circulating then there is a real chance that the turbo could get quite hot. How hot I've no idea. Hot enough to cook the oil? Hot enough to damage the bearings? Who knows.

 

I'm not a mechanic or an engineer but I am aware of how vulnerable turbo's can be on modern engines, especially as they start to get a little longer in the tooth, I went through three turbo's in as many months due to various manufacturing defects!

 

One thing is for sure, as long as that turbo lasts three years, that's all that matters in VAG's eyes.

 

Personally I wouldn't worry, if you are mechanically sympathetic you'll be replenishing the oil regularly and treating the car with respect. I reckon all will be well with the stop/start.

I could be wrong, but id imagine that when stopped for stop start, theres a sub system running ti keep ciculating the coolent and oil through their pumps run off battery? If they believe or have discicered over heating as a possibilty while stopped ...

My money would be on that there isn't. The turbo is independant from the water cooled system.

 

I would imagine incorporating a sub-system that is designed to continue circulating the oil through the oil cooler after the engine is turned off would be cost prohibitive.

 

VAG aren't often short of surprises though