right well im going td04 by the end of this month (thats a promise) and part of me fitting everything in the process is to give the car a damn good service ready for the new power so whats the best oil to use and any recomendations , like should i bother flushing the engine etc if so how do i do it ? but really i want to know these 2 things blat ! 1) best engine oil to use 2) best radiator/coolant fluid (im guna change to a civic rad) cheers you guys