What oil should i use have a 2012 scion tc recommends 0w-20 and what filter and how often should i change? Trd oil filter? mobil 1 oil change?

 

The oil you use is up to you, mostly. If you are still under warrenty stick with 0w20. If you have modifications or are in a very hot climate try a 0w30 or 5w30.

Everyone has their own opinion on what oil is best so I'm not going to get into that. Long story short... Use a quality oil of the weight you want and a quality filter. (K&Nm Amsoil, Mobil 1, Fram Ultra, Bosch Platnium, etc.)