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Originally Posted by 2porscheguy
Thanks for some more great insight JFP! How about with a 997 Turbo? I change mine every fall regardless of Kms. I just think it's the right thing to do especially if it sits all winter...you know the old saying, it's pretty cheap insurance!
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You should never store a car over the winter with used oil in it. Over time, oil collects moisture, fuel, and other containments that break down the oil and form acids which will attack all of the machined surfaces in the engine. Just before you put it away, change the oil and filter; your engine will thank you.