i had my rx8 for a month now and its been lovely. I just had my first 1000km and the mazda techs told me to go in for a service.
I did, and now my car feels to rev not as freely as it did, and it seems like it has lost a little bit of it power and acceleration.
i saw that they charged me for 5w30 oil, which may account for it, since in the car there was a filler-up oil which was 5w40 if i am not mistaken. Was teh 5w40 the original oil that came inside the engine (straight in from Japan production line).
What is the oil i should be using? having in mind i am in europe and where i am out max/min temperatures range from 44 to -5 degrees celcius.