I recently bought my EVO 9 MR and I'm doing a oil change but not quite sure what oil to use any recommendations? Have any of you used Royal purple synthetic oil? Would you recommand it? I also just bought Oem Mitsubishi oil filters and Mitsubishi OEM DiaQueen Transmission Fluid 75W85 for my 6 speed MR and NGK EVO 9 Laser Iridium Spark Plugs ILFR7H. What you guys think.