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Date: Thu, 09 Dec 2004 22:59:41 +0000
From: Pooh Bear <>
Subject: Re: First Time Saab owner

KeithG wrote: > Synth may be able to get this life, but it is a bit of a gamble unless > you either do an oil analysis to determine if and when it is due or have > an oil monitor built in (9^3SS). In the US, we seem to take shorter > trips which shortens oil life. There have been a number of 2.3L engines > which have suffered from sludging. Whether or not it is due to poor > Dino oil or just due to driving style, I do not know. This was not > historically been a problem with the T4 and the only change I can > attribute it to is the 10k oil change interval. I just would not stretch > it that long without oil analysis to corroborate it. Therefore, I change > my Mobil 1 at 5k... YMMV It's also popular to flush an engine here when changing oil. Either by use of a flushing additive before draining the old oil, or traditional drain - run engine with flushing oil and drain again. This certainly helps keep an engine clean. Never ever heard of the sludging problem over here with modern oils though. Lots of short journeys certainly doesn't help, yet I used to do several short runs every day in the car I had before the Saab and never experienced any such problem. Graham

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