Hi guys! I'm new here, although i have been reading various threads for some time now... Decided to register because i have a problem (duh). Anyway, to shorten the story, i live in Croatia EU (mostly warm climate), own a Fiat Bravo II, 1.6Mjet 88Kw/300nM (120ps), 2011, 160k Km (~100k miles), it has DPF. I do about 10-12k km a year and this last year i drowe on Mobil1 ESP Formula 5w-30 (C2/C3). In general i can't say i had any problems with that oil, DPF indicator never turned on (AFAIK) even though my wife and i mostly drive short distances in the city. I do take the car on a freeway once or twice a month to "blow some steam off" (can't remember the right term :))... Car does not burn oil, when checking the dip-stick after 12k km, oil loss is negligible... But there is one issue i have, it's the click-clack sound when the engine is cold, i believe it's the valves. When cold, the engine is "lazy" and a bit loud, gas pedal response is a bit slow. I never put my foot down when the engine is cold, but when it reaches working temp all the simptoms dissapear... So, i'm not sure, but i would guess that 5w-30 is a bit thin for this engine, taking the warm/hot climate (especially in summer) in consideration. AFAIK, the engine demands Fiat 9.55535-S1 and ACEA C2 oil spec. Some local "experts" suggested i go with a 5w-40, others say nothing except 5w-30, so i hope you understand my dilemma... Can you please suggest what oil would be best (price/performance wise) for this small displacement JTD turbo diesel (with a DPF)? Thank you very much.