1999 SAAB 9-5 Whining noise (The dreaded sludge?)

A short clip of our SAAB 9-5 2.0T which has developed a rather annoying high pitched whine until warm. This problem (from what I've been reading) stems from oil sludge building up in the sump which will eventually starve the engine of oil. Heres to hoping its not quite that serious. The car is a 1999 and has 156k miles on the clock. EDIT: The problem was later diagnosed as having a thick build up of oil in the sump and was repaired by removing, cleaning the sump & strainer/pickup and refitting.

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