First, if you’re a Do-It-Yourselfer, get under the hood. Otherwise, visit your friendly automotive technician. Winter only magnifies existing problems like pings, hard starts, sluggish performance or rough idling, so make certain the engine is in peak condition. Check the cooling system, too. Coolant should be flushed and refilled every 2 years. Your folks will not necessarily know this, so don’t wait for their nod on this one. See the rest of the tips here.