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post #5 of (permalink) Old 27th March 2007
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Yes, this is 'sludge' which is emulsified oil & water (but less water than would appear if the head gasket were to blame - hence, the colour). I would concur with what's already been mentioned - there are a number of additives which help to dissolve and flush out the old oil (and contaminants) and is added prior to changing the oil itself. I would suggest getting this done sooner than later, as this will probably have accumulated in the filter and galleries within the engine - which can lead to oil starvation, and premature wear.

Every now and again (once the service has been carried out), give the car a boot up the motorway for a few miles, and this will help prevent a reoccurence.


This job should never be complete - the day I think I've done it all, is the day I resign.

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