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C30 / S40 & V50 '04-'12 / C70 '06-'13 General Forum for the P1-platform C30 / S40 / V50 / C70 models |
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How long do (petrol) turbos last?Views : 1812 Replies : 33Users Viewing This Thread : |
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Aug 17th, 2018, 22:45 | #1 |
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How long do (petrol) turbos last?
Hi all, I've never owned a turbo before (not even a diesel one) but as I look to find a C30 T5, was just wondering how long they're known to last before before needing changing/refurbishing (I presume there are companies that refurbish them)?
Any tell-tale signs bar a drop in power when they're starting to wear? Years back people used to let turbos 'cool down' rather than immediately switching off the engine (after a bit of hooning) to prolong the life of them: I can't imagine anyone still doing that nowadays?? |
Aug 18th, 2018, 08:52 | #2 | |
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Cool Running.
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Regards,Keith.
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Aug 18th, 2018, 08:58 | #3 | |
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Aug 18th, 2018, 10:19 | #4 | |
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Turbochargers have been watercooled for many years now , so just drive it normally and you won't get any problems .
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Aug 18th, 2018, 10:22 | #5 |
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Can he hold you liable to that?
You still need to maintain turbos, they get extraordinarily hot regardless and spin very fast. Let em cool and slow always whether its water cooled or not. Water cooling wont slow down a fast turbine in dry bearings. |
Aug 18th, 2018, 10:23 | #6 |
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I agree with 'ksmi' and 'T5Sweep'. The handbook supplied with my '06' Saab 9-3 (Petrol Turbo) recommends allowing the engine to idle for 20 seconds before switching off after a run.
When I bought my previous 9-5 at 140K it had just had the sump cleaned and a new turbo fitted (I'm fairly sure a first replacement unit). It is important to use good quality fully synthetic oil in these engines for these reasons. Regards, John.
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Time flies like an arrow, fruit flies like a banana ..... Last edited by john.wigley; Aug 18th, 2018 at 10:25. |
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Aug 18th, 2018, 10:30 | #7 | |
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Your points may be valid after a racing circuit experience but in everyday use no need to bother you have water and oil cooling the turbo .
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Aug 18th, 2018, 10:40 | #8 |
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Turbo shafts float within a high pressure cushion of oil, switch the engine off and this is instantly gone, wearing the seals and bearings. Once the seals become worn they start to weep oil, eventually losing lots. With turbos it always pays to reduce this situation as much as possible. Most people do idle a mo before switching off, but lots come to rest from high rpm and switch instantly off, something ive witnessed often.
High quality oil is indeed a good thing with turbos though as it is more resistant to oxidation aka 'cooking'. |
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Aug 18th, 2018, 16:46 | #9 |
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Thanks for all the replies guys, good to hear the opinions and also to understand exactly what's going on in there.
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Aug 19th, 2018, 01:21 | #10 | |
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