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The other day I parked my 1999 996 C4 ROW further back in my driveway than usual, such that the nose was higher than the tail - only by 6 inches or so, nothing like The Streets of San Francisco.

When I started up a couple of days later there was loud tappit (and possibly other) noise which disappeared after a few seconds.

I checked the oil next day when on the level - sensor and dipstick at 100%.

Some emulsion in oil filler - I hear that's normal (should I remove it?)

I have since repeated the experiment cannot get the same result (which is good)

Any ideas chaps?

Danny

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To my knowledge, it's not a problem....just some moisture. Regularly driving the car far enough to fully warm the engine for a while is the best solution.

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Both conditions are normal. The engine oil temp has to get over 80C to start to burn off the moisture suspended in it. The noise is most likely a hydrualic lifter that has bleed down. Keep an eye on things just to make sure it's nothing more serious.

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