car manufacturers are not going to tell most people that they need to let the car run for a minute to coool down. especially cars with turbos. WHY YOU ASK? Well it all boils down to MONEY! The auto manufacturers know the law of averages to a finite level. and that being when a cars starts to fail due to age ,wear and tear they know that the aaverage consumer is going to trade the car in once it reaches this level of CONSUMER DISCOMFORT. when you consider that millions of NEW CARS are made and SOLD each year only a small percentage of consumers are going to be as knowledgable as the AUTO ENTHUSIAST. the average consumer is not going to know that a turbo gets that HOT! and the average consumer is about 83% of the population..

 

ask yourself this question? do you really think that the auto makers really want your car to last forever????

 

I understand that the coolant keeps circulating after the engine is shut down and that is GREAT!!!! BUT, on the other hand, the oil does not. I'm sure after a normal drive to work that the coolant would be sufficiant in the cooling process, however, after a hard blast down your favorite mountain road, things tend to get a-whole-lot warmer. The oil circulating helps the cooling process as well, and I say let er' idle for a few after a hard run, what's it going to hurt? If extra cooling is there, I say USE IT!!!!

 

if you take a pot and put it on the stove.......turn it on high and leave it there the pot will warp. if you fill the pot with water and put it on high.......the water will boil off and the pot will NOT warp. the water is boiling off the heat before it can do any harm to the pot. the coolant in your system does the same for your turbo. the coolant boils off before the oil can get too hot.

by running your motor for a few minutes what you are doing is cooling the oil by using cooler exhaust gases. the cool exhaust gas spins through the turbo and brings the oil to a temp where it can cool without making coke. the new system uses the coolant to keep the oil from getting to that temp. THIS IS WHY THERE IS NO NEED TO SIT AND IDLE FOR A FEW MINUTES. do your research and you'll understand why.


think of it this way..........

OLD TECHNOLOGY.........had to idle for 2 or 3 minutes to cool off

NEW TECHNOLOGY.....no cool down idle needed

it really is that simple.

i'm not trying to be a dick.....but........somebody started this thread and asked a question.........the question was answered and nobody listened.......NEXT TIME JUST DO WHATEVER THE HELL YOU WANT IF YOU'RE NOT GOING TO TAKE ANY ADVICE.



BUT LISTEN TO PEATY!!!!! peaty knows his sh*t, if he says you don't need to cool down before shut off i bet he's right!!!!

later, riggs

 

Easy there fella.........

I'm sure that we ALL understand what you are saying, and I know that I agree fully! BUT,,,,,,,,,,,,, there are those that are stubborn as hell and would rather just go that extra step to insure there are no problems. I just don't see a problem with that.

 

I think we have come to a point where all of the facts are on the table and we are "arguing" about opinions.

Fact: No idiling for cool down is necessary.
Opinion #1: Don't let the turbo cool prior to shutdown.
Opinion #2: Let the car idle for 1-2 minutes prior to shutdown.
My opinion: It is nice to finally understand how the turbo cooling works and that cooldown is not necessary. For the little bit of time and fuel it uses, I will continue to let the turbo cool prior to shutdown as a preventative measure.

But, as they say, to each his own. I think we can let each person make up their mind based on the facts.

 

NateSD, sorry bout the caps and all.......i wasn't screaming......just making points. sometimes i get all jazzed up!!! haha!!!

i agree with you too.....if someone wants to take the time and sit there for no reason.....godbless thier patience and more power to them. i was stating that mechanically it wasn't neccessary and there is absolutely no need what-so-ever to sit there and idle.

later, riggs