Mishimoto 04-11 Mazda RX8 Primary Replacement Oil LineBrand Mishimoto Part Number MMSBH RX8 04 Category Fabrication Oil Line Kits Condition Brand New Original Manufacturer Packaging The Mazda RX8 has a high winding rotary engine capable of easy reaching 9,000RPMs on a daily basis. With those revs comes very high oil temperatures. Most RX8 models with manual transmissions were outfitted with dual oil coolers from the factory to keep the rotary engine's oil at a safe temperature during high speed driving