My Rav4 Dact with 177ps bought about 1 year ago was changed by me an original Toyota oil with 5w30 ACEA: A1/B1, A5/B5! Meanwhile I got with this engine only a C2 or C3 oil should use because of the DPF! I drove with the ACEA: A1/B1, A5/B5 Original Toyota oil already 13000km without any problems ! What should I take for an ash-poor oil? Liqui Moly Top Tec 4300 Or to a 0W 30 or 40 change this but a C3?!?Then change every 2 years? Many questions but I would like to ask for answers