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Originally Posted by ConnClark
The first change after the switch to synthetics showed higher levels than dyno oil in some catagories. They attributed this to the better detergents in the synthetic oil flushing the engine out.
I have also had several people recomend doing a short oil change after the switch to synthetic oil because it flushes all sorts of crud out of the engine.
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This is my foremost concern, too. It's entirely possible the powerful detergents found in syn diesel oils are stripping away layers of sludge/deposits left behind. Worst case: continue to monitor via UOA.