Turbo, how long should i idle the car before switching off

My VW diesel says to idle the engine for 5-10 seconds before turning off the engine to allow the turbo to 'spin down', otherwise you risk premature wear of the turbo bearings. The reason for this if you are not already aware is that they are fluid bearings, i.e. the turbo shaft spins in a fine presurised film of oil. Hence if you turn the engine off, then no oil, so the bearing spins in the bearing housing.

Andy

Hi,

Right for the principle (and the explaination I didn't quote) but 5-10s seems too small for me. The procedure I use and which I recommend is : - don't drive it too hard on the last miles (5 miles should do the trick), - idle it for 30s before switching the engine off. Thanks for the turbocharger. Spinning @ 100kRPM isn't an easy job :-)

HTH, G.T snipped-for-privacy@worldonline.fr

205 Diesel & turbo-Diesel :

Oil change every 12000 miles or once a year is the minimum. Use semi-synthetic oil and a Peugeot filter.

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Your 406HDi 110 bhp is not fitted with a turbocharger and does not require any "cooling-off period". It is a common-rail diesel and fuel is injected by a high pressure pump. Suggest you put "common-rail diesel" in Google, you will get all you need and more. Would recommend using an oil from Millers Oils, if you intend to keep

406 in the long-term. All is revealed on Happy Motoring. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

"W@L" wrote in news:lW%gd.18$ snipped-for-privacy@newsfe1-win.ntli.net:

Excuse me? Next to all modern common-rail dieselengines are fitted with a turbo. So is the 406. Common-rail is not equivalent to non-turbo!

Maarten

The only modern direct injection diesel engine cars are VW SDI's. They are slow and gutless.

The new 74hp 2.0 SDI is a 16valve lump with common rail, it's the new 2.0 TDI, but without the turbo for the Golf Mk-5.

I have a VW Touran with a 2.0TDI engine 140Bhp, it pulls like a train and is much more responsive than my old (02Plate) Vauxhall Vectra SRI. It is one hell of an engine, just a little too noisy.

There not that bad, and IMHO would be a better choice than a base model 1.4 petrol.

My friend had the old VW 1.9D, before the SDI model was introduced in the Polo, it was a fairly nice car and had plenty of power, although the HP figures are low, the car was in no way short of pull, I have driven much worse i.e. Citroen ZX 1.9Diesel (non turbo)

Andy

do not, i repeat do not go to millersoils whatever, if you are trying to plug the company here at least get your facts right

the 406 has a turbo charger ( and a big one to!) oh and it likes a semi or full synthetic 10w40

I just checked out my 406 on Miller's and they say it has a turbo, and recommend Millers XFD 5W-40 FULLY SYNTHETIC, I can pick up a similar spec oil from GSF for half the price...

Andy

Looked at the GSF site but no sign of synthetic oil at any price! .

From memory, the Millers fully synthetic sells at £25 for 5 litres in my local Whitehead store.

I have no idea if it is a good oil etc. but my preference would be for a fully synthetic oil

PN Description Fitment Price() Basket N98002G Total Quartz 9000 5W40 fully synthetic engine oil 5L All performance and HDI petrol's/diesels 14.50

Sorry to post HTML! - Andy

Or did I post HTML? I'm completely shot away today! ;) Andy

I'm sure to a certain extent with oil like most things, you get what you pay for though...

Andy

That's the oil you have to pay extra for at my Citroen garage. They used to say it is far in excess of what is required for a HDI engine. I had to persuade them to use it.

Now they have a board showing benefits of oil types. Fully synth is recommended for motorway drivers and urban use. That just about covers everyone. At under £20 a pot, I warrant it worthy of my money.

I recon this oil is spot on. I have posted this before.... but check out the engine oil bible....

It's not an exciting read by any stretch of the imagination, but all of the facts are there.

Andy

A little knowledge is a dangerous thing, especially if you know less than you think. Sorry for the wrong info about turbos on common-rail diesels, as posted earlier today.

Further subsequent posts, I have looked at my 406HDi owners manual and borrowed a copy of Haynes 406 manual. Clearly, a turbo is fitted along with an high-pressure fuel pump and common-rail injection system. Strangely, the Peugeot owners manual makes no mention of any need to allow for turbo cooling but, Haynes cautions against revving a cold engine and advises running at tick-over for several minutes, after a high-speed run.

As for Millers Oils, I have no commercial interest and have never used them, as my 406 is still in warranty and my Peugeot dealer does not use Millers. My recommendation was based on the experience of friends who swear by Millers( without any commercial interest ,on their part). Two of them run Peugeot direct injection diesels (turbo and non-turbo units) without an engine overhaul after 170,000 and 210,000 miles of mixed motoring,including towing. As the originator of this subject wishes to keep his 406 long-term, I thought this might be relevant.

Happy motoring!!

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My manual say's to leave it running for a short while, knowing the French quite well this can take a whole day :-) ( no pun intended GT ) the haynes manual is also known as the book of lies and has the same value of truth as George Bush saying uhh uuh well saying anything.

i'd say let the turbo spin down for 30 seconds to be on the save side then turn the ignition of, @ least the haynes is at the safe side

Pug uses and recommends Total full synthetic 5w40 or semi synth 10w40 however Shell helix ultra 5w40/30 group III synthetic works fine for me. you'll find it at your local Ferrari dealer :-) it gives a good fuel economy as well, which might prove valuable these day's

Shell Helix F1SL785 is the thing shell has come up with for the melbourne F1 race to lube the ferrari's. 100% esther compound hydrogenated slack wax polyolefinen "oil" i'd say shell has a lot of experience in lubing car engines, i could possible tell you about millers

A DW10 lump should do 400.000 miles no sweat just regular oils change ( 12.000 miles) and don't halford your car to oblivion......

sure do, i'm a very lucky man, my other car is a PUG

Well thanks chaps, for the information, it was precisely the lack of anything in the owners manual and the recommendation in the Haynes that made me post in the first place.

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Hi Marc,

Before I begin treating the post, please guys tidy up the posts you answer ! Always annoying to see a 150-lines-post with only 2 new lines.

LOL ! The best thing to do, indeed :-)

Of course, anyway you're posting for a while on this NG (and so do I, indeed), so I know there's no offence hiere.

Not talking about politics here, yes I tend to believe it just tells lies or has inaccurate information - when you find them in that book. In France we're lucky, there are two technical books. The RTA (we don't present the RTA anymore) and the Haynes (translated into french for 15 years or so). The RTA doesn't cover how to perform an oil change and may lie, too. But that's a pleasant book for the tech, with almost all operations covered into the book :-)

And for Bush, hey, I've heard this week on the radio that 72% of Frenchies would vote for Kerry. But that's useless, as they don't vote in the USA :-)

That's my guess, too (see my post above).

Yeah. Anyway, as long as you stick to good, reputable oil makers (Total, Elf, Esso, Shell, whatever ? Not Tesco of course), I guess there's no problem to come.

I guess the same thing. Oh, who would trust an Halford's service here ? C'mon ! OK, we also have a lot of centers like Halfrauds here, neither do I trust them... I've already heard so many terrific stories !

Same here, took me over 15 years, but now my father's got rid of his R4 (many thanks to both rust & MOT) so we only have pugs at home - I guess I wouldn't take any other brand if I had to change my car.

Regards, G.T snipped-for-privacy@worldonline.fr

205 Diesel & turbo-Diesel :