I was told that not letting your car cool down will creat a build up of oil in your turbo. Once that oil is heated up and cooled rapidly enough, Just shutting off your car, That oil will harden and could possible get suck in and ruin your turbo and your motor? Any truth to that Mr. Warr sir?

 

Hey Warrtalon - how bout some details on that statement? I for one am sitting here going " ok... I might see that... but why??".

 

There's a long, technical article explaining exactly why it's bad for the engine to warm it up by idling for a long time instead of driving slowly at low rpm, but I can never find it. I read it in a thread where we were arguing this, but forgot the topic of that thread.

 

tonz, its a good idea in my opinion to let your car cool down, if you were driving hard, just cause its a 30+ thousand car and a good habit to get into if u are ever going to get a bigger turbo as some of them arnt water cooled like the factory unit. but oil cant harden like your thinking. the condition is called cokeing. its when the oil is so hot it turn to powder and kills the bearings of the turbo and motor depending how much oil got coked. usually if u kill a turbo this way other more expensive things breaking are bound to happen soon. but its also been said that with the newer synthetic oils there is less of a chance of this happening cause they are formulated to be able to withstand higher heats before they coke

 

Same here.

 

Thanks, I love info like that. One day ill be that smart. Hopefully...

 

People make the mistake of "warming up" their cars for a longer period of time then recommended by the manufacturer. It is best to "warm up" the car for about 30 seconds and no longer than a minute. Just drive off and don't go WOT until normal operating temperature is acheived.