On 01/28/2000, Clayton wrote:
I would agree with most of what you said except the heat can be a problem only if you are raving, er racing. The heat problem comes in with normal day to day driving where the car, for most people, never has a chance to warm up. You can never give your car full foot until a turbo car really warms up, if you want it to last 100,000 miles. Also, everytime you stop your car it really is a good idea to idle the thing for five minutes...

I'll take some minor issues with this. The amount of time you need to idle the turbo down is a function of a bunch of things, most importantly heat and speed. If you've just come off a hot drive, with your foot firmly planted a large percentage of the time (like, say the cops pull you over), idling the turbo down lets it a: spin down to a slow speed and b: cool off.

After a REALLY hard drive, a minute or so will be plenty.

On the other hand, if you've been putting around town and need to stop at the hardware store, 15 seconds will suffice.

In addition to owning an 88 GLI (hence my presence here) and an 85 BMW K100RS motorcycle, we also own a 91 Saab 900 Turbo. It's been treated as described above and has no problems - about 110,000 miles on the clock. My last boss had 175k on his 900T before he gave it to his son - original turbo, treated as described. Any way you cut it, 5 minutes is big overkill. Cheaper insurance is the use of fully synthetic oils.

tom coradeschi
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