Sometimes, radiators have leaks, and it's not always possible to replace the radiator. Replacing antifreeze completely requires a flush and fill kit, which flushes all the existing coolant from the radiator so you can replace it with completely fresh water and antifreeze. Antifreeze is mostly available in gallon jugs. For example, a 50/50 mixture of antifreeze and water raises the temperature about 10 degrees Fahrenheit and lowers the freezing point to -35F, meaning your engine runs more efficiently in colder temperatures. Adding antifreeze and coolant raises both the boiling point and freezing point of the water. Weak coolant, low coolant levels or a leak in the cooling system, such as in the radiator or a hose, can cause your radiator to overheat and cause the engine to stop running. Antifreeze and coolantsĪlthough there's some water in your engine's cooling system, it can't run on water alone. The lower the W number, the less viscous your oil will become in colder temperatures. Most oils have two numbers you might see oils labeled with "5W-30" or "15W-40." The first number with the "W," which stands for winter indicates how well the oil flows at a colder air temperature, and the second number stands for how well the oil flows at a higher air temperature. Motor oil is rated by its viscosity, with a higher number indicating a higher viscosity. The types of oils available include conventional, which is the type most vehicles can use full synthetic, which is chemically engineered to have fewer impurities and better properties, making it best for high- and low-temperature performance synthetic blend, which is a mixture of conventional and synthetic oil that has added protection against oxidation and high mileage, which is ideal for vehicles that are several years old or have more than 75,000 miles on their odometers. The type of filter you choose depends on what car you drive and the type of oil you use for it. All of this causes the oil to break down after a few thousand miles, requiring you to change it and the oil filter. Motor oil lubricates the many moving parts in your vehicle's engine and absorbs the heat that the movement of those parts produces. Maintaining the motor oil in your vehicle is one of the most important things you can do to ensure your safety while driving, and doing so could potentially extend the life of your vehicle. Here's what your car needs when it comes to fluids. Same problem everything seems fine but coolant keeps dropping in the radiator and coolant eventually overflowing out of the reservoir which I drained out and added back to the radiator every month or two. You can save money doing it yourself, especially with our Every Day Low Prices. This is exactly what happened to my 2005 3.8L GC. If you like taking charge of car maintenance yourself, Walmart has all the fluids, filters and tools you need to keep your car running smoothly. This means checking the fluids on a regular basis and changing them (or having a trusted auto shop do the job) when the time comes to refresh everything. They course through your vehicle and need to be clean to let your car, truck or SUV operate at peak performance. The fluids in your car are essentially its lifeblood, and your vehicle's components need different fluids to function as intended. Air Conditioning Chemicals and RefrigerantsĪutomotive fluids help keep your vehicle running like new.If you notice an oily surface in your coolant, immediately have your mechanic inspect your Grand Caravan for head gasket leakage. Taking off the coolant reservoir cap on a warm engine could cause the cap to up explosively and fluid to spray out of the reservoir. See our video on how to add engine coolant for tips on adding coolant to your Grand Caravan.Īlways wear safety goggles when working on your Grand Caravan. If you need to add anti-freeze, be sure to check your owners manual to determine the correct type of coolant to add - in Dodges, it usually located in a section titled Fluid Capacities towards the end of your manual. The video above shows you where the coolant reservoir in your Grand Caravan is located and how to check the coolant / antifreeze level. Engine coolant / antifreeze circulates through your engine to keep it cool in the summer but won't freeze in the winter. In order to get an accurate reading, your 3.8 liter engine should be cool to the touch when you check it. Checking the engine coolant (also known as antifreeze) level in your 2007 Dodge Grand Caravan is pretty easy.
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