I just change my oil for 10 w 30 (red line) and when my 455 is hot the oil come really thin. I can hear oil drain like water it is bad for my engine
No. Redline is a good oil, but any 10W-30 is going to get 'thin' when hot (or any other oil, relative to it's viscosity, for that matter). Has your oil pressure changed significantly with the switch? Just change it at correct intervals, keep the oil level correct, and don't over-rev it! :3gears: