Now now cattypus, or is that bagpuss.Again, at the risk of inducing hypertension in @darkie007's parrot, I've just changed the oil in my 992 GT3. Only 4.5K miles, but 3.5 years and several track days old. I've sent a sample off to the Oil Lab and will post the results.
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It's a peculiar Mobil 1 0W-40 made just for the Pork GT cars. It's green out of the bottle, like old Duckhams. Looks odd and of course has the Pork tax associated with it.
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Less of the snark.
Glamourpuss to bagpuss ,,,no wonder