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Saabs and sludge
Posted by David Ingram (more from David Ingram) on Tue, 12 Feb 2008 08:22:40
In Reply to: 1997 CSE Died hello 9-5 board, LACK10, Sun, 10 Feb 2008 16:43:35
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As 4Liter notes, 9-5s and new 900/9-3s are susceptible to the godawful sludge experience. In high enough numbers that it's causing a crash in their prices and a huge hike in the price for the remaining good engines out there. Not to scare you, but it's definitely something you have to check carefully.
Interestingly, the principal culprit seems to be higher engine operating temps in order to meet more stringent emissions requirements. And this issue is also a major problem for many manufacturers, not just Saab. For instance, it's just as huge a problem for VW/Audi 1.8 turbo engines in all applications, and with similar inflation of used engine prices.
I don't know if the issue extends to more recent model years or not, but you begin to see these effects on various brands beginning in the late 90s.
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