I know that almost everyone here has their own opinion about oil, but nevertheless I am interested in every contribution from you to my decision: Audi Coupe 2.8 V6 approx.180000 km at the time Castrol 10W-60 The oil was unfortunately a mistake, because shortly after it was in it clacking in cold temperatures the hydros for a few seconds and the oil pressure seems to me also very high. Before was always Shell Helix Ultra 5W 40 (from the predecessor) My selection: 1: Shell Helix 5W-40 2: Castrol GTX7 Dynatec 5W -40 3: Castrol Formula RS 0W-40 Price of oil does not matter, I tend to No. 3 Greetings Pyromane05