I have read several replies concerning the RX8 and the one that caught my attention was about oil. The writer says that the oil must be checked every 500 miles. They didn't say how much, if any, oil they were adding. Is there a oil consumption problem with the rotary engine? Since my wife and I have an RX8 on order, this concerns me, along with some comments about the engine running hotter than a piston engine. Any information would be appreciated.