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It depends.
Most of the Spec race cars change it every weekend. I run about 20 DE days/yr and avoid super hot days or super extreme engine demands. We just do this for fun right? I change it every 6 months, 3k miles, or anytime the oil color begins to darken indicating contamination.
FWIW my last car had over 112k miles, 100 track days, around 250 track hours on the original 2.5L Boxster motor and compression still tested good when I sold her.
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2021 Cayman GTS 4.0L
2020 Macan (dog hauler)
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