keep your cool
Make sure your radiator hoses aren’t cracked, and your car is full of coolant. | Micah Wright/Autos Cheat Sheet

Your engine is making thousands of explosions a day to keep you moving down the road. Understandably, things get pretty hot in there, which is why your car has a cooling system. And while it doesn’t need to be swapped out as often, antifreeze is just as important as oil. Make sure you’re topped off with coolant, and if there are any leaks coming from your radiator or hoses, get them taken care of immediately. A car with no coolant is not long for this world.