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I remember back in the 80's when turbo's became popular especially by Chrysler, that you had to let the vehicle idle for up to a minute before shutting off to allow the turbo to spool down and cool off, is this still the case with the newer turbo's? Thanks.
It's not needed but it's recommended if you want to increase the lifespan of the turbo. I have a TFSI VW engine back home and they mention this in their guide.
It's true if you do long highway ride and then suddenly stop on gas station.
If you leave highway and drive slowly to your backyard, it's not needed.
Exhaust gas temperatures vary greatly with load. You're not really seeing a heavy load on the highway unless you're pulling something or you just went all out on acceleration.
I would recommend that you do allow the car to idle for 30 second to a minute before shutting it down. The turbos on today's cars are so small they are spinning at several thousand rpm at idle and 10-20K rpm just cruising around. Under boost it's not uncommon for a turbo to spin 110-130K RPM. Most people also don't understand that the heat within the turbine housing is well in excess of 1500F.
Oils today are better at fighting heat but not that good and they still coke up just like they did 20 yrs ago.
Let the car idle for 30 seconds before shutting it off. It won't kill ya.
Unless the car has a system to circulate oil/coolant in the turbo after turning the engine off, it's just a good idea to let it idle for 30 seconds or so after a hard drive to help it cool off. You don't need to do it after EVERY drive, just hard drives where you are pushing the car. If you come off the freeway after a hard run and drive a couple miles to your house at normal speeds, than no need. If you just did a pass at the drag strip, then let the car idle for a little bit before turning it off.
Unless the car has a system to circulate oil/coolant in the turbo after turning the engine off, it's just a good idea to let it idle for 30 seconds or so after a hard drive to help it cool off. You don't need to do it after EVERY drive, just hard drives where you are pushing the car. If you come off the freeway after a hard run and drive a couple miles to your house at normal speeds, than no need. If you just did a pass at the drag strip, then let the car idle for a little bit before turning it off.
What he said. Also, note that not all oils are turbo-approved, there are oils out there that are perfectly fine for non-turbo engines, but are not formulated to take the heat of the turbo "hot soak" after shut down, and will form coke in the bearing. Wise guys can look up "petroleum coke" on Wikipedia, I am not talking about a soft drink or a drug.
Me, I run a synthetic in any car that does not leak or burn several quarts between changes. A good synthetic is cheap insurance on a turbo car, just as a 30 second idle before shuttting off.
HI guys, i want to buy a used car that has a turbo (Golf 6 1.4 tsi or Audi 1.4). Must people are saying i should not buy turbo charged car with more than 40000km because it is most likely to get damaged at that mileage. is it true?
HI guys, i want to buy a used car that has a turbo (Golf 6 1.4 tsi or Audi 1.4). Must people are saying i should not buy turbo charged car with more than 40000km because it is most likely to get damaged at that mileage. is it true?
We don't have the engines you are talking about here in the US, so no direct experience with them. You said 40,000km and that would work out to about 24,000 miles. At that kind of mileage (honestly not sure what they call it when they use kilometers, kilometerage???, anyway) the car is really just getting broken in. If you were talking about 400,000km, or 240,000 miles, then yeah, I'd be really concerned about it unless the engines been rebuilt.
One of the key things on any turbo car is performing regular maintenance and using the correct parts/fluids to do it. As long as the used car you were looking at was well maintained, I wouldn't worry about it.
Of course, turbos do wear out eventually even with proper maintenance and normal use. When that happens is very engine dependent. In general, but around 100,000 miles or 160,000km I would start to be concerned about the health of the turbo. As long as everything has been well maintained, it should be fine, but that is the age when you might start seeing small leaks and maybe a little bit of power loss.
I shut my Sonata 2.0T off right away when I get to my destination. It has a 10yr/100k warranty. Plus, it's a lease
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