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zakthor zakthor is offline
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Join Date: Jun 2010
Location: beaux arts, wa
Posts: 481
Originally Posted by mark houghton View Post
See Ronnies' response, #3:
As you have noted, those are definitely coke particles from oil cooking in the bearing cartridge.

The problem is that the coke buildup in the turbo bearings eventually comes loose and goes straight back into the crankcase as opposed to going back to the oil tank and through the stock oil filter (I probably butchered that and someone will surely call me on the carpet). Thus, the aftermarket filter being a good idea. Stick with synthetic oil and do away with oil coking in the hot turbo or do the filter thing.
Remember that Rich's car has no turbo.

Means there is another mystery source for cooked oil.
Old 10-23-2014, 05:56 AM
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