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sludge in your 300tdi oil cooler

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Having changed the oil cooler pipes recently on my 300tdi, when the bottom hose was disconnected, the oil was sludgy and thick....

Its definitely worth a flush out of the oil cooler while the pipes are off.

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The strange thing about diesel engine oil is that it thickens with age. I removed the sump plug on a transit a couple of years ago and the oil was so thick when cold that nothing came out. A simple oil change took me a couple of days and was rather expensive to the customer.


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