Why do dealerships allow you to drive off the lot if you aren't approved for financing?

I’ve heard different opinions about what type of oil a car should have. I know it has something to do with temperature and thickness. In your official opinion, what kind of oil does a 2004 Honda Accord take?

I’m mapping out my band’s summer tour. We’re stopping in a bunch of Cali cities and towns. We’re trying to have fun on the road, but we’ll need to do a little extra planning ahead of time so we don’t miss any shows. What’s the driving distance between San Francisco and Los Angeles?

How much does it cost to get a new car heater? Mine works, but just barely, and I’m about to experience my first winter since moving up north.