Oil Change Frequency?
I bought my '03 Boxster at a Porsche dealer last May. 33K miles, Porsche certified.
There was a Mobil 1 oil change at the time.
Since then, I've driven about 4500 miles, mixed driving, no tracking. Car always garaged. I drive about 6K miles per year. The car has not used any oil since the oil change last May.
The question is: Should I change the oil at 6K miles this summer, or can I wait until 12K miles next year?
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