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    Thread: Traffic or signals or Petrol bunk:: Effect of switching off the engine on the engine parts

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      Traffic or signals or Petrol bunk:: Effect of switching off the engine on the engine parts

      Hi Guys,

      After I bought a diesel engine vehicle I have come across evereyone telling that we need to keep the vehicle in idle for min of 30secs to 1 min before switching off or before starting off. But the dealer said todays engine are very good and no noeed to worry about that part and in the last sentence he says why to take risk so please follow that itself.

      Now my question is everyday while driving I get stuck in the traffic jam or signals and have to wait for min of 3-4 mins.
      1) Is it advisable to switch off the engine so that you save some diesel and the environment. By doing this, is the engine getting hurt???

      Now my second question is while in petrol bunk
      2)Is it advisable to switch off the engine or keep the engine in idle.

      By switching off/on continously what will be the cummulative effect on the engine.
      Try walking into YOUR car rather than crawling. For me walking is always best ---GURU SHISHIR

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      After idling the car for a minute, you can switch it off be it at the signal or in the petrol pump or at work/home. Usually watercooled turbos are less prone to turbo failures than a oil cooled turbo if you don't idle it. What turbo runs in the Xylo?

      I would still suggest let the turbo idle for a minute before you switch it off.

      If you are hitting a petrol pump, usually what I do is drive in slow so that the turbo has enough time to cool down. Some petrol pumps like Shell ask you to switch off the engine.
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      What turbo runs in the Xylo?
      . This is a good question for me. Will let you know in some time.
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      It is oil cooled.
      If you've not been boosting within the minute before switching off, there is no harm.
      Usually, in bumper traffic, there is no chance to floor it. So switching off at lights is ok.
      Idling before switch off is mainly for hard running. Turbos are not as delicate as before.
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      Idling before switch off is mainly for hard running
      . You mean to say fast drive and coming to a halt right??
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      Quote Originally Posted by Ripper View Post
      It is oil cooled.
      If you've not been boosting within the minute before switching off, there is no harm.
      At times I used to lose my patience trying to wait for a few minutes

      When we lived in the apartment on BIAL Road, I would cruise back the last 1km (thanks to bad roads). By the time I got to the basement, parked the car properly it would have not seen boost for 3-4 mins. Even at the new house we are staying at, the last 200mtrs I really take it easy. Takes me about 2 mins to park the car inside. Saves me the trouble of having to sit inside the car and do nothing but wait for a minute or two just idling the car...
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      Quote Originally Posted by shishirbn View Post
      . You mean to say fast drive and coming to a halt right??
      fast drive means any outstation trip or a long drive on the NICE road where you are constantly hitting high speeds which keep the rev needle above 2k RPM. after this kind of run your turbo needs to cool off, i would suggest a min or so to let the turbo cool off.

      in city run you will be lucky if the vehicle crosses 2k rpm, so most of the time your car is running on the torque of the engine and turbo is rarely spooled. a 30 sec idling is sufficient.

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      Quote Originally Posted by shishirbn View Post
      . You mean to say fast drive and coming to a halt right??
      Yes. make sure that you dont switch off the engine immediately after flooring the car. You can turn off the engine in traffic lights with no issues. I started following it as a regular practice and the gas mileage increased (@ 0.50-0.75 kmpl) in the city driving.
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      Quote Originally Posted by mclaren1885 View Post
      At times I used to lose my patience trying to wait for a few minutes

      Saves me the trouble of having to sit inside the car and do nothing but wait for a minute or two just idling the car...
      buy a turbo timer mcl. its not that expensive. and with your setup i would suggest it

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      wow, wonderful tips...Thanks guys... I was like having it in ON state even on signals which were more than 5 mins stop.
      so most of the time your car is running on the torque of the engine and turbo is rarely spooled
      . Now I got it goddy. As you said during traffic condition it willbe around 1700-1800 rpm and only on the ring road after KR puram upto Marathalli it will be near 2000rpm. So I guess I can switch off then..
      Try walking into YOUR car rather than crawling. For me walking is always best ---GURU SHISHIR

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