Hi, I have a 2008 petrol 1.4 TFSI Hatchback I bought almost a year ago with ~103k KM, changed the oil and all the filters then after some research, opting for the Castrol EDGE FST 5w40 as I read it was better for "higher mileage" cars. I'm now at around 114k km and thought it's time to change it, thinking to swap to the 5w30 recommended in the Audi book. I've looked around the forums a lot for feedback on this, with no clear answer, as most threads refer to Diesel engines or newer models. I live in a very humid, relatively warm area (0-20C in winter, 20-35C in summer). I'd appreciate any feedback on this subject.