I made another thread about the best oil filter for my 2010 Toyota Yaris. The Yaris was bought new in January 2010 and currently has 31,480 miles. I have used M1 5W30 from the first oil change. The Yaris will be driven less than 5000 miles per year and it will be frequently driven less than 3 miles per day. Atleast twice a month it will be driven into town (that's 15 highway miles). I plan on doing oil changes just once a year. With a little help from this forum, I have decided that the Fram Ultra would be a better choice than the Purolator currently on the car. I will change the oil tomorrow, and will be using Mobil 1 5W30 Extended Performance (just got back from Wal-Mart 35 minutes ago). I did look at Mobil 1 AFE 0W30 but on paper the Mobil 1 Extended Performace looked like a better choice .......................0W30 AFE........5W30 EP [email protected] [email protected] Viscosity Index.....166............169 Is there something else I should be looking at? Next time should I use 0W30? If so Why?