I used Penrite 15W-40 oils from the first service I bought the car in 2004 and when I pulled the engine apart in 2011(to do some performance modifications), there was no sludge or signs of excessive wear with 201,XXXKM.
In regards to the coolant, only use the red Long Life, not the Super Long Life and perform coolant changes every 40,000 - 60,000KMs. Nulon makes a good alternative to the OEM coolant.