Lincoln is all about comfort, and one of the parts you rely on most to keep you comfortable as you pilot your Continental or Navigator is the Lincoln heater core. Think about it: Without a working Lincoln heater core you'd have no way of dialing up any kind of heat in the cockpit. For our Arizona visitors, that may not seem like a big problem, but most of us use the Lincoln heater core at least a few months out of the year. If you have automatic climate control, you probably use you Lincoln heater core more often than you realize, too. That's because auto climate control mixes heat and air conditioning to produce the desired temperature, so you may be using your Lincoln heater core even in the middle of summer. But the bottom line is that even if you rarely use your Lincoln heater core, you need to have a fully operational, leak free Lincoln heater core. See, engine coolant circulates through the tiny tubes throughout the Lincoln heater core. If those tubes rust or corrode, antifreeze ends up on the inside of your vehicle. It doesn't take much of an imagination to see that a leaking Lincoln heater core can make a mess of your carpet and dashboard in short order. A bad Lincoln heater core can cause unseen damage as well: Rust can form under the carpeting if coolant pools there for long periods of time. So whether you have a classic Kennedy Continental or a late-model LS, take any signs of a bad Lincoln heater core seriously. Moisture in the cockpit, excess humidity, and visible green coolant on the carpet are all sure signs that you need to order a new Lincoln heater core from us as soon as possible.