I have a question and can't seem to find a direct answer. I've had my focus since August 6th. It had 2 miles when I got it. I'm now at the mid 800s. I drive roughly 4-12 miles a day I believe or so. Roughly. I'm seldom on the highway. Perhaps maybe 2 times a week for about 5 miles give or take. I do drive a decent amount of hills. The one is a speed limit of 45mph. I'm on that everyday it's probably a mile or three long. Maybe less I'd. But anyway, my towns speed limits go between 20-45mph. So when would you say is a good time to change my oil? What is the best oil to use? Also is that when I would rotate my tires? Also, with winter right around the corner, is there any products I can put on my car to fight against scrapes from salt? Finally, is there a product that is safe if it were to hit my paint that I can spray or put on my windows to either stop ice from forming or to melt it and snow? Thank you!