sound and heat shield under bonnet of RS??

[Mysticality]

Goes to show you how much boost effects oil temp.
Trip to Sydney in the morning, downhill-ish, oil temp will cruise at 90. Trip home again, to Bowral, uphill-ish, oil temp will cruise at 100-105.

First time I saw it I pulled over, thinking something was up.
Every time I do that trip, it does it.

[BottomScratcher]

First time I saw it I pulled over, thinking something was up.

I was concerned the first time I noticed the oil temp at about 105 as well. I wasn't used to having an oil temp guage. Most of my other cars have had water temp, and oil pressure. Oil pressure while cruising is pretty constant, so it was something new to watch the oil temp guage climb from about 90 up to 105 - especially when you know the water temp should be steady around 85.

[brad]

My 2007 118TSI didn't have the heat shield.

I got the dealer to supply one because the underbonnet looked unfinished. Fitting took me 10 minutes. Price was circa $100 but they did it as warranty IIRC (said the heat shield on another car was damaged I think).

AFAIK, the diesels have the heat shield & the petrols don't. It aids in the warm-up process.

I've never had an issue with excessive heat retention in the last 4 years/100,000km. I like the fact that the bonnet is insulated as I have had several cars where the paint on the bonnet stuffed up because of excessive heat from the engine.

[Mysticality]

That being said about the water temp... it can vary between about 75-80 and over 100 before the gauge will move off 90.
The highest I've seen my water temp (via OBD-II) is 102, and the dial still had not moved, so...

[DunlopRS]

That being said about the water temp... it can vary between about 75-80 and over 100 before the gauge will move off 90.
The highest I've seen my water temp (via OBD-II) is 102, and the dial still had not moved, so...

......so it is an indicator only

[Mysticality]

Pretty much.
I don't even pay attention to it, anymore... Although I've found that the seat warmers and the heat from the air vents both seem to start working at 60^C. (From a cold start, everything turned on at the same time)


EDIT: Took my engine compartment cover off, today... Man, its shiny in there.
I'll leave it off for a week and see if there are any differences.
Slight difference in noise, noticed when revving in the garage, after closing the bonnet.

[MarksVRS]

Coming right up!!

Thanks buddy!

i cant believe it, I was going to wash the car so I lifted the bonnet and there it was! Just havent really paid attention in the past I guess

[BottomScratcher]

......so it is an indicator only

With all the wizzydoo stuff on our clever cars, and all the stuff we can do via VCDS, it's probably worth mentioning that the thermostats and temp sensors use the same technology that's been around for decades. Thermostats have a predetermined opening temp that's controlled by a wax pellet inside the thermostat. As the water in the cooling system heats up the wax melts and allows the thermostat to open and allows the hotter water in the block and head to circulate forcing the cooler water in the radiator into the block, and on it goes. The heating system doesn't get any heated water going through it until the thermostat starts to open. All this controlled by the heat getting supplied to a little lump of wax that has a flow of water of constantly varying temp through its housing. The coolant temperature sensor (CTS) is a little more sophisticated. It's a thermistor (a resistor that varies the value of its voltage output as temperature to it changes). To say that the temp gauge is only an indicator is in my view fair comment.

[brad]

Not sure if this is relevant re: temp gauge accuracy & possible mod

[Mysticality]

@BS- I took a trip down Macquarie Pass one morning, coolant temp was 90^C at the top, and was about 60^C at the bottom. Temp gauge was at 90 the entire time. :/
Had to rev it out of the corners just to keep the interior heat up!!... Shivering just thinking about that day.