Chuck is the sludge expert - Saab 9-5 Bulletin Board - Saabnet.com
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Chuck is the sludge expert
Posted by Jon Fero [Email] (more from Jon Fero) on Thu, 6 Mar 2008 09:11:55
In Reply to: Mathew, unless you're a complete retard...., Bill U, Wed, 5 Mar 2008 20:13:21
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and, if I recall, he has written that design limitations and possibly poor machining of oil pumps means that some 4 cylinder 9-5s develop sludge even with frequent fully synthetic oil changes. Driving conditions play a very important role. The PCV upgrade does not resolve all of these variables in all cases, but it has seemed to reduce the frequency of sludge, when combined with proper maintanence, and perhaps other manufacturer changes. For example, Saab seems to have clamped down on the quality control of oil pump machining, and didn't they increase the oil capacity from '04 forward?
The bottom line is, unfortunately, you have to be really careful when buying a used 4 cylinder 9-5, '99 to '03. If there is a sludge problem, Saab probably will not help you without proper service records.
posted by 165.127.2...
Posts in this Thread:
- Please help me sort out the Sludge thing, Mike Johnson, Wed, 5 Mar 2008 04:13:32
- Re: Please help me sort out the Sludge thing, Matthew Bartlett, Wed, 5 Mar 2008 12:16:57
- Re: Please help me sort out the Sludge thing, kevphill, Wed, 19 Mar 2008 20:39:34
- Mathew, unless you're a complete retard...., Bill U, Wed, 5 Mar 2008 20:13:21
- Re: Please help me sort out the Sludge thing, BWC, Wed, 5 Mar 2008 13:10:03
- Re: Please help me sort out the Sludge thing, MI-Roger
, Wed, 5 Mar 2008 05:20:34
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, Thu, 20 Mar 2008 04:05:58