I recently bought our Porsche 911 and have been seeking advice about putting it up for the winter. One thing everyone seems to say, just as mentioned here, is to change the oil before storing it and then change it again in the spring before starting it. Why put in brand new oil, only to dump it out? If the engine isn't going to be cranked over, then why have any oil in it. I understand getting the old oil out to prevent corrosion, but why put in new oil to just sit there?

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member