I just purchased a 2009 Passion back in March and I’m due for an oil change. I live in southern GA it is very hot and humid here most of the year. Right now our current high temps are in the 90’s so I was just curious what would be the best oil to use in my Smart for the temperatures here? I really want to use what the manufacturers recommend but it seems 0W May be a little too thin for this climate? Also I am a “do it myself” type this will be my first time ever doing any work to the car Any advice would be greatly appreciated! Thanks!