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175mph951 175mph951 is offline
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Join Date: Sep 2005
Location: new york
Posts: 1,372
if you question was why is this there, then the answer is because of the amount of oil fed to the turbo. it helps to empty the turbo faster..the oil comes into the turbo at high pressure and volume. 60-80+ psi. if only had a drain line running out of the turbo to the scavange pump, it wouldnt drain fast enough. the oil would build up in the turbocharger and it would either leak past or completely blow out the internal seals resulting in smoke from the exhaust. it basically just stores the oil until the scavange pump can pump it away without letting it get backed up. this is different then most other cars in that the turbo is usually higher then the crankcase and returns directly in to the oil pan as in a 944t. on the 944t you can notice how much bigger the oil reurn line is then the oil feed. i also agree with what was said before this should be drained with a normal oil change.
Old 09-13-2010, 08:45 PM
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