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No sludge issue at all in the 9k
Posted by Craig [Email] (more from Craig) on Fri, 18 Feb 2011 15:45:54
In Reply to: Anybody actually have a couple of each of these, oldsaab, Wed, 16 Feb 2011 18:35:28
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The post-9k Saabs have a finer mesh in the pick up screen (hence the low oil pressure from sludge) and the cat is closer to the oil pan (warms up quicker for emissions purposes, but more likely to cook the oil). I've never heard of a 9k with sludge issue. Post 9ks also have a revised piston design that moves the rings further up which can cause blown pistons on tuned cars, presumably if they get a little lean. The 9-5s are great, but it is a shame they made a few changes that made the strong as snails motor a little less so.
Craig
'87 9kT 322k
posted by 72.83.103...
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