![]() Also check your heater hoses, which run from the engine (usually near the thermostat housing) into the firewall and back. The extra stress on the hose from the pipe collar and hose clamp means they typically crack and fail there first. Look first at where both the input and output radiator hoses attach to the engine and to the radiator. Once a hose gets hard, it cracks and hot water spurts out. At high temps, the plasticizers that make rubber squishy leach out at a faster rate. In a car, they are regularly exposed to temperatures around the 212-degree boiling point. Hoses: Rubber hoses would last 10 years if all they did were sit on a shelf. ![]() While they are under the car, have them give the drive-shaft U-joints and any other grease points a squirt of grease. A regular oil-change shop can handle the greasy job of changing manual transmission oil and the differential oil. Check your owner’s manual for their change intervals, as they are quite a bit longer than engine oil. ![]()
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