just a quick question

when you have got parked up and let yout turbo wind down how long should you wait????????

If you've been driving hard then you're meant to give it a minute or two due to heat soak iirc or at least thats what I do:D

If Ive been using it hard, I just drive gently towards the end of the journey to let it cool

edit: if you've not been thrashing it, you can just turn it off without any worry, mine is a learner car, and gets stalled several times a day, and it hasn't killed the turbo yet (56k and counting...)

If Ive been using it hard, I just drive gently towards the end of the journey to let it cool

Aye, or if its a bit close to home, I stick the car in neutral, get out, get stuff off back seat, check the boot for crap, maybe check the lpg tank level, have a look at the car, then go around to turn car off and engage steering lock.

Likewise, into neutral to coast the last few hundred metres home, up to the gate, out to open it, up to the garage (keep meaning to fit the power opener) out to open that garage, get whatever out of the boot etc. then into the garage and engine off. I guess there is merit in putting the car away if only to add those important few seconds cooling time !

I f I spank it down the bypass near my house it gets 2 or 3 minutes tickover to cool everything down.

Isn't the point of this exercise to remove excessive heat from the turbo via the oil cooling? If the engine stops then whatever oil is around the turbo will cook.

Correct me if i'm wrong of course

No you're right, the idea is to draw the hot oil away from the turbo. Not really a big deal on a diesel, but can be a problem on a petrol if you come from driving it hard to a standstill and switch off. Not usually a problem for me as it always takes me 10 minutes to park anyway

Chris

And remember, if dropping off a dual carriageway into a grage to fill up, it is worth waiting for the turbo to cool a while before driving up to the pumps.

Chris

I'd say that although on a diesel it's less of a problem then on petrols, it's still well worth it, especially if you've got a standard turbo tuned to pretty much the safe (or beyond...) limit. Treat it with a little respect and it may last a lot longer.

For the same reason it's probably not too bad an idea to let the engine warm up before trashing the cr*p out of it

Good point about the filling up part though, must admit that one is easy to forget

So if this 'cool down' is good for it ,why isnt it in the handbook??

I know why, cos VAG dont think there is any problem and 'so cool' down is unnecessary. So with a standard car stop wasting your time boys n girls and get a life!!

The new vRS 2.0T FSI has this problem sorted, after shutting off the engine a pump continues to circulate water through the turbo, thus cooling it without the engine on.

The new vRS 2.0T FSI has this problem sorted, after shutting off the engine a pump continues to circulate water through the turbo, thus cooling it without the engine on.

Is it definitely water?!?!

Chris

So if this 'cool down' is good for it ,why isnt it in the handbook??

I know why, cos VAG dont think there is any problem and 'so cool' down is unnecessary.

Yeah my Scooby had stickers inside the cabin to say "Idle the car for 5 minutes after pulling off the highway" or words to that effect, as well as mentioning it in the handbook. I reckon they must have shares in Shell or BP

Chris

That's because the turbo is not that likely to fail within the warranty period when using standard boost levels...

Quite different from 'just-about-killing-the-turbo' boost levels. Nothing wrong with doing the cooldown thing

the turbo on 1.8T is water cooled aswell as oil running through it