1 hour ago, SouthernComfort said:

Yes, it's the fan. Small capacity engine turbos have been around for quite some time, by and large they're very efficient. If you've done a fairly fast run it's best to let the engine idle for around 30 secs or so before switching off to help the turbo and engine cool down. It will allow coolant and oil to continue flowing at a reduced temperature and relieve exhaust  pressure built up by the turbo avoiding damage to both turbo and engine.

Yes i wasn't  sure if it was the radiator fan as it's very quiet I thought it was probably a small extra fan just for the turbo. Ok not thanks for the info.  Yes I have been leaving it on about that or more even though I don't do fast runs, I'm thinking it's probably unnecessary unless I find it hard and fast which I'm not, I would think a normal short drive would not require that.

1 hour ago, Rooted said:

You get some right nonsense talked.

 

@LuxoviaRSNo idea where you get the idea that 4 cylinder engines and turbo,s are a relative recent phenomeona.

 

?How old are you,

were you born by 1978?

My dad had a BMW turbo which was second had before that.

Ok sir thanks for the scolding🤣 i probably needed that. Sorry i don't disclose my age😂.  Noted, I know turbos have been around for years. I guess what I meant was it's more common now widespread where manufacturers install small turbos to small capacity engines to give them similar power as larger naturally aspired engines whilst offering the economy of a smaller 4 cylinder engine 😀. 

36 minutes ago, LuxoviaRS said:

Yes i wasn't  sure if it was the radiator fan as it's very quiet I thought it was probably a small extra fan just for the turbo. Ok not thanks for the info.  Yes I have been leaving it on about that or more even though I don't do fast runs, I'm thinking it's probably unnecessary unless I find it hard and fast which I'm not, I would think a normal short drive would not require that.

On urban low speed running it's not so important. By the time you have shunted into your garage or a parking space at little more than idle, that would be enough. Still not a bad practice though, I'm so entrenched in the habit I do it without thinking!

2 hours ago, SouthernComfort said:

and relieve exhaust  pressure built up by the turbo

Wait, what?! 😂

14 minutes ago, Jorgeminator said:

Wait, what?! 😂

That confused me as well. Isn't that what the dump valve is there for? 

1 hour ago, @Lee said:

..........Isn't that what the dump valve is there for? 

Yes, but old school habits die hard 😉

13 minutes ago, SouthernComfort said:

Yes, but old school habits die hard 😉

Perhaps change your habits or rid yourself of of old ones. 

 

🤷

17 minutes ago, @Lee said:

Perhaps change your habits or rid yourself of of old ones. 

 

🤷

Doubt that will happen. As a driver of an early turbo diesel 4x4 for very many years (no dump valve), the practice became established. In more recent times I've had a couple of modern small petrol turbo's including this one, but the habit is still there. I'm not entirely sure we have a dump valve per se in these VAG engines, but rather a recirculating by-pass or diverter valve, which may explain the absence of that irritating sound of excess pressure being vented to the atmosphere. I haven't had the inclination to delve deeper into these little machines, but that's my suspicion. Anyway, changing what can only be described as a harmless procedure that may even help to mitigate the impact of a leaking or otherwise failing Dump or Diverter valve can only be a good thing. Each to his own, live and let live, etc.....

5 hours ago, SouthernComfort said:

Doubt that will happen. As a driver of an early turbo diesel 4x4 for very many years (no dump valve), the practice became established. In more recent times I've had a couple of modern small petrol turbo's including this one, but the habit is still there. I'm not entirely sure we have a dump valve per se in these VAG engines, but rather a recirculating by-pass or diverter valve, which may explain the absence of that irritating sound of excess pressure being vented to the atmosphere. I haven't had the inclination to delve deeper into these little machines, but that's my suspicion. Anyway, changing what can only be described as a harmless procedure that may even help to mitigate the impact of a leaking or otherwise failing Dump or Diverter valve can only be a good thing. Each to his own, live and let live, etc.....

I think you meant to say 'intake' instead of exhaust, that's what confused people. The turbo does the complete opposite of pressurizing the exhaust. It harvests the flow/pressure in the exhaust and lowers it to produce pressure on the intake side. I'm not sure either about the specific component fitted to modern VAG engines, but you're right, without one we'd be hearing chu-chu-chu-chu as the compressor stalls on letting off the throttle 😁

17 hours ago, LuxoviaRS said:

Mine shows 90 all the time.

Doesn't mean a lot - the temperature gauges show 90 for aa wide range of temperatures, as VAG got too many owners going back to dealers saying the water temperature had gone up/down by a few degrees which is normal.

11 hours ago, Jorgeminator said:

I think you meant to say 'intake' instead of exhaust, that's what confused people. The turbo does the complete opposite of pressurizing the exhaust. It harvests the flow/pressure in the exhaust and lowers it to produce pressure on the intake side. I'm not sure either about the specific component fitted to modern VAG engines, but you're right, without one we'd be hearing chu-chu-chu-chu as the compressor stalls on letting off the throttle 😁

Hmmm, perhaps a little clumsy. What I really meant was exhaust induced pressure. So yes, the pressure that builds up isn't compressed exhaust gasses, but rather the output (intake pressure) resulting from exhaust gasses starting the process off in spinning the turbo.

 

Idling can also help oil longevity and keep the turbo cleaner. Idling the engine for a few seconds will cool oil in the bearing shaft preventing the turbine burning it off or coking up.

23 hours ago, Rooted said:

You get some right nonsense talked.

 

@LuxoviaRSNo idea where you get the idea that 4 cylinder engines and turbo,s are a relative recent phenomeona.

 

?How old are you,

were you born by 1978?

My dad had a BMW turbo which was second had before that.

Very odd threads posted by this person, not sure if they're a troll or just genuinely clueless

He probably did not register the words "small capacity", an over the top response nonetheless but we all have our bad days.

4 hours ago, ZacDaMan72 said:

Very odd threads posted by this person, not sure if they're a troll or just genuinely clueless

Wait, are you referring to me,  i can't tell.  Well if you are,  yeah I guess I'm that clueless😂😂 and no not a troll🤣🤣. Just learning about a new car purchased from those, with experience and better knowledge 😀

@LuxoviaRSNo referring to me i take it. Being cheeky monkeys.

 

It was you i thought being from Australia were there were big engines, V8,s etc and where cars used to be built that you maybe considered 2 litres to be small capacity & fitting turbos a recent thing.

 

So is it just, 600 & 900 cc, 1.0, 1.2. 1.3. 1.4.1.5. 1.6 & even 1.8 that is 'Small capacity that is being referred to.

 

& Maybe 30 years being recent, or even over 40 years.

 

...................

Then as far as running a Turbo for 30 seconds or more when stopping.

Yes that was good advice when roasting a car, battering along maybe using all its performance and not just half and then stopping.

 

If the engine needs to run on when the oil / coolant / turbo is at a very high temp then the driver would not even need to turn off Stop /Start so the engine does not just turn off, it would be engineered to run on.

As it is it is engineered to turn on the fans and run the coolant by the pump. 

 

 

 

Edited 10 December, 20232 yr by Rooted

19 minutes ago, Rooted said:

As it is it is engineered to turn on the fans and run the coolant by the pump. 

... the electrical auxiliary pump which can run even when the engine is turned off.

4 hours ago, Rooted said:

@LuxoviaRSNo referring to me i take it. Being cheeky monkeys.

Yeah perhaos, still I had to make sure 😄

 

4 hours ago, Rooted said:

 

It was you i thought being from Australia were there were big engines, V8,s etc and where cars used to be built that you maybe considered 2 litres to be small capacity & fitting turbos a recent thing.

 

So is it just, 600 & 900 cc, 1.0, 1.2. 1.3. 1.4.1.5. 1.6 & even 1.8 that is 'Small capacity that is being referred to.

 

& Maybe 30 years being recent, or even over 40 years

Firstly apologies for my long rant.

 Yes of course growing up here in Australia i have been more used to the big straight 6 or v6 and v8, not that we don't have smaller capacity engines, we do but from memory they weren't the best sellers but I'm talking about 20 or 30 years or so ago of course things change.  Yes about that not really sure of capacity in cubic metres i never cared for small engined cars I've always had interest more in bigger engines.   Actually it's  not like I've never heard of turbo powered cars too here in Australia as well, albeit not that common or known to me. A few friends and aquintances had these but they were 3.0 L turbo or 2.8.  Maybe there were smaller engines with turbos as well here, I just am not aware of.  Hey don't take wrong they were fun to be driven in  but i never really wanted one. Well here I am now an owner of a turbo powered car. I guess my point above was that a lot of newer cars with small capacity engines are built more for the purpose of economy than performance when the manufacturers implement the turbo i could be wrong with my statement here but it's not for the purpose of performance that they are built rather for an economical purpose.   For me though in the past whenever I've heard of turbo boosted vehicles I've always associated turbo powered cars with performance and with aftermarket, and never thought of them as economical option, but that's just my ignorance talking I guess.  

 

 

4 hours ago, Rooted said:

Then as far as running a Turbo for 30 seconds or more when stopping.

Yes that was good advice when roasting a car, battering along maybe using all its performance and not just half and then stopping.

 

 

Fair enough point taken. I'm still to roast my car 😂😂. Maybe when I've broken it in which isn't too far away but I'm glad to half bake for now 🤣🤣. 

4 hours ago, Rooted said:

If the engine needs to run on when the oil / coolant / turbo is at a very high temp then the driver would not even need to turn off Stop /Start so the engine does not just turn off, it would be engineered to run on.

As it is it is engineered

 

Actually that was going to be my next question, I was wondering if that is what happens when the car is driven hard or the temp gets very high though the manual says to keep the engine running. Does the engine keep on running even with auto start on? For me it just stops but I have to manually turn it off I guess it would if i was driving it hard,  wouldn't  as it does when the aircon is running. 

 

 

@LuxoviaRSVery interesting from a Merican for Lexus / Toyota in the USA or anyplace really including Australia.

 

Mericans liked their Fast Lube changes every 3,000 miles without a filter change. then even at 6,000 miles when in the UK cars were maybe at 12,000 mile oil changes.

Subaru & Lexus a couple of decades back were going for long Oil & Filter intervals wit Long Life Oil, then it turned out the rest of the car needed Inspections & Servicing and maintenance a long time sooner and they went back to sensible advice, recommendations, guidelines, schedules or specicifation.

 

For those that might do 5,000 miles in 3 or 4 months then variable / flexible servicing is often enough to be getting oil changed, even the fixed 9,400 miles / 372 days for tye average or below average driver.

 

I have done 4,800 miles since the 10th August, but in an EV so no servicing / maintenance due till June 2025 or 25,000 miles when it is a brake fluid change.

Till then washer fluid and tyres are what need paying attention to. 

7 hours ago, LuxoviaRS said:

Actually that was going to be my next question, I was wondering if that is what happens when the car is driven hard or the temp gets very high though the manual says to keep the engine running. Does the engine keep on running even with auto start on? For me it just stops but I have to manually turn it off I guess it would if i was driving it hard,  wouldn't  as it does when the aircon is running. 

The Stop/Start system doesn't know whether you're stopped at lights, in a traffic jam, or parking at the end of your run - it isn't 'engineered' to keep running to enable the engine to cool, it only engages its brain to restart for powering up a/c to maintain set cabin temp. Yes, the manufacturers are only interested in fuel efficiency, not in the health of your turbo, oil consumption or battery.

Mate, I can only urge that once you've completed your 10hr run in 30-40c ambient, stick her in Park, foot off the brake and let her idle for 30secs, it's not long out your life, but your turbo will thank you long term. Following my younger days in Holden, Falcon & Valiant V8 iron block dinosaurs, I've only had turbo engines for the last 30 years, everything from 4litre V6's to the baby 1.4 4cyl today. Never had a turbo fail, or need cleaning/servicing, I know of many who have with painful bills as a result.

6 hours ago, SouthernComfort said:

The Stop/Start system doesn't know whether you're stopped at lights, in a traffic jam, or parking at the end of your run - it isn't 'engineered' to keep running to enable the engine to cool, it only engages its brain to restart for powering up a/c to maintain set cabin temp. Yes, the manufacturers are only interested in fuel efficiency, not in the health of your turbo, oil consumption or battery.

Mate, I can only urge that once you've completed your 10hr run in 30-40c ambient, stick her in Park, foot off the brake and let her idle for 30secs, it's not long out your life, but your turbo will thank you long term.

Yes you are right that's very true I have noticed that,  of course it doesn't know so it's really up to me i guess.  Tbh i have been doing that even after short normal trips, is it overkill do you think to let it run 30 sec even after short trips?  I guess the worse that could happen is I'm probably burning a bit more fuel. 

 

6 hours ago, SouthernComfort said:

Following my younger days in Holden, Falcon & Valiant V8 iron block dinosaurs, I've only had turbo engines for the last 30 years, everything from 4litre V6's to the baby 1.4 4cyl today. Never had a turbo fail, or need cleaning/servicing, I know of many who have with painful bills as a result.

Ahh that is good to read, I want to have your experience with the turbo engines. Yes that's why I'm trying to do what I can to prevent these things happening. 

13 minutes ago, LuxoviaRS said:

Yes you are right that's very true I have noticed that,  of course it doesn't know so it's really up to me i guess.  Tbh i have been doing that even after short normal trips, is it overkill do you think to let it run 30 sec even after short trips?  I guess the worse that could happen is I'm probably burning a bit more fuel. 

 

Ahh that is good to read, I want to have your experience with the turbo engines. Yes that's why I'm trying to do what I can to prevent these things happening. 

Not so necessary on very short runs but it's more about speed and revs than duration of trip. If a relatively short trip is getting the engine/turbo hot and the turbo is working hard (e.g. if you're driving in very hilly areas, as I often do), then just do it - it's a good habit to let the oil and turbo cool down with that few seconds of idling, can't do any harm. The amount of extra fuel consumed would be next to nothing.  

1 hour ago, SouthernComfort said:

Not so necessary on very short runs but it's more about speed and revs than duration of trip. If a relatively short trip is getting the engine/turbo hot and the turbo is working hard (e.g. if you're driving in very hilly areas, as I often do), then just do it - it's a good habit to let the oil and turbo cool down with that few seconds of idling, can't do any harm. The amount of extra fuel consumed would be next to nothing.  

Ok all noted thanks for that.  

I did not have a cover for the Octavia from nearly new for around 8-9 months till it went in for its first service, whilst making the appointment  on the phone they said it would be replaced whilst it was in,  no issues with it since but it’s very bland no branding at all on it 

3 hours ago, Dw118 said:

I did not have a cover for the Octavia from nearly new for around 8-9 months till it went in for its first service, whilst making the appointment  on the phone they said it would be replaced whilst it was in,  no issues with it since but it’s very bland no branding at all on it 

Cool ok. I wonder if I leave it off when I take in for a service,  will they offer to put it back on or just do it automatically.

1 minute ago, LuxoviaRS said:

Cool ok. I wonder if I leave it off when I take in for a service,  will they offer to put it back on or just do it automatically.

Possibly but think the reg / vin will be on record as having it replaced 🤣