The coolant system is a vital part of your vehicle. It is also the second most common cause for vehicle failures. Even though coolant system failure is fairly common in San Diego, it is easy to prevent. The most recognizable part of the coolant system is the radiator. It is connected to the engine with hoses and is filled with coolant. The coolant draws heat off the engine and then passes into the radiator. Air passes through cooling fins to reduce the temperature of the coolant and then it's back to the engine again.There are several ways for the cooling system to fail. Most common is with the coolant itself. Coolant is comprised of water and antifreeze. The proper ratio keeps the coolant from either boiling away or freezing. Understandably, either can lead to massive engine damage.Another coolant issue that is often overlooked by San Diego drivers is the age of the coolant itself. Antifreeze has additives that protect the coolant system from corrosion. As these addit ... read more

San Diego drivers rely on their vehicle's coolant system to keep their engine cool. Coolant (also called antifreeze) mixed with water flows through your vehicle engine and absorbs heat. The mixture then flows out to the radiator where it's cooled by air flowing over the radiator. From there the coolant/water mix circulates back through the engine to absorb more heat.There's a reason we mix coolant and water. Water alone actually does a good job transferring heat from the engine. The problem is that water boils at a temperature that's easily reached inside your vehicle's engine, so it can turn to steam which does not conduct heat as well and is harder to contain.Also, if it's freezing outside in San Diego, the water in your engine could freeze while your vehicle is sitting out in the CA cold.So, if you remember your high school chemistry, you'll know that a mixture has both a higher boiling point and a lower freezing point than ei ... read more

The cooling system keeps CA vehicle's engines from overheating while they are driving around San Diego. Its job is to move heat away from the engine. Let's talk about the various components of the system and how they make this happen.The radiator is the part most San Diego drivers associate with the cooling system. Coolant flows through the radiator which has fine cooling fins that draw the heat out of the coolant and dissipate it into the air. To make sure there's enough airflow over the radiator, a fan pulls air over the cooling fins even when the vehicle is idling.In some vehicles, the fan is powered by the serpentine belt. On others, an electric motor runs the fan. Electric fans turn on and off as needed. You may have heard the fan kick on shortly after you turn your vehicle off. The sensor has determined that the engine needs a little help cooling down to a safe temperature.A hose connects the radiator to the water pump. The water ... read more

Unless you live in Death Valley, you really don't hear much any more about cars overheating. That's because cooling systems in vehicles have been much improved. That doesn't mean you can't overheat your vehicle engine, though. Without proper preventive maintenance, you could still find yourself on the side of the road in San Diego waiting for your vehicle engine to cool down.When you service your cooling system at John's Automotive Care, your technician will check the condition of the coolant. It can become corrosive over time, which can damage a radiator — leading to an overheated engine. Changing the coolant periodically is good vehicle care. Your vehicle owner's manual can give you guidelines on how often to replace it.If your engine overheated, your friendly and knowledgeable service advisor will also check your coolant system for leaks. Check the vehicle radiator for ... read more

San Diego residents' vehicles have to operate in a wide range of CA temperatures which requires the engine coolant to be able to perform 'no matter what.' Think for a moment about the environment where the coolant does its thing. Very hot, high pressure, corrosive...And all the while, it has to protect the components of the cooling system from corrosion. These components are made from steel and aluminum, plastics and rubber. The coolant has to be formulated to protect against corrosion for all of these different materials. That's why vehicle manufacturer’s recommend different types of anti-freeze for our San Diego, CA, vehicles.There are several different 'families' of anti-freeze available to us here in San Diego. Your owner's manual will tell you what kind you should use. Of course, the automotive professionals at John's Automotive Care will know the right kind for your vehicle.It's important to stay on top of this because coolant system failure is the most comm ... read more

San Diego auto owners may know that most automotive failures in San Diego, CA, are tire related, but do you know the second most common cause of vehicle failure? Nope, it's not teenagers. It is the coolant system. But if you take good care of your vehicle coolant system, it will take good care of you.A vehicle's engine creates a lot of heat - so much heat, that if it is not properly cooled, the engine can lock up, resulting in massive damage and repair bills. But when everything is working right, your vehicle engine operates at the proper temperature and all is well. Without antifreeze in your cooling system, the water could freeze and cause vehicle engine damage. This could be very expensive, not to mention inconvenient.The right mix of water and antifreeze protects the engine against damage from freezing and overheating. Antifreeze also protects the coolant system against corrosion that could cause the system to fail. The thing to remember is this: coolant system failure is ver ... read more