too heavy. for canada, use 5w30 all year except between june 1-sept.30, when you should use 10w30. i find quaker state peak performance gave the best performance in my rio. trust me on this, i was in the automotive oil business and i live in toronto.
actually, i didnt know quaker state was required. its just personal preference and works well. you seem to know a lot about kia's. do you know if anyone makes urethane steering bushings or lightweight pulleys for this car? 2002 rio