Royal Purple. Engine Damage In The Long Term?

Chupacabra

BMW cars make you change oils every 13-15k miles...Even in south Florida type weather.

I have used RP for 22k miles on the Z and not notices any problems... I have always been an M1 person, but RP seems to do just fine, as long as there is a max cap of 5k per oil change.

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Where are my aluminum pedals?

moto_italia

And Porsche went to 15,000 mile interval on oil changes a few years back, on non-turbo cars. 7,500 on turbos.

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Kevin