i have an 03 s60 r with 115,000 miles on it, my friends are saying i should replace my turbo, because they go bad over 100k. is that true?

 

Hi Nick, welcome to the site. The answer to your question is......(drum roll please).... NO!

If you take care of your car and change your oil regularly, warm the car up before you put pressure on the turbo, let the car calm down before you shut it off, your turbo will likely last over 200,000 miles. It can last 300,000+. Most people don't know how to take care of a turbo. If the turbo is well lubricated before you put your foot in it and after you drive hard you keep the car running without any pressure on it before you cut it off (2 miles or 2 minutes) it will not get any stress wear. Crank the car up and drive it like crazy before it gets warmed up properly, drive it hard and turn it off within seconds, and the turbo can wear out in 60,000 miles.

 

Thanks man, now my friends won't bitch at me anymore

 

actually RSPI its until you have normal idle, about 15 seconds. Give or take. Running a cold turbo engine hard when cold does way more damage than you would think. My 2 cents.

 

Oh, they'll still bitch. You just have to know better to pay any attention to it or not.

 

nope not quite, a turbo spins at up to about 140,000 rpm! it takes some time to slow down, and regular driving is about 30-45 seconds for it to get to a more normal speed
but that's not the problem, it's that the turbo gets extremely hot, way hotter than the engine itself. if you simply turn off the car, even if the compressor itself is not spinning, it can still be hot enough to cook the oil, thereby clogging the oil lines and burning out the compressor. wait at least 1 minute if you have been driving at all, and at least 2 if you were going fast. even though these turbos are liquid cooled.

 

Im building a jet turbine out of an old turbo and mounting it to a go kart or moped. Normal rev speeds are in the 40k range. Turbine speeds are in the range you speak of. Do the research no offence taken.