1/2/2024 0 Comments Diesel coolant flush costWetting agents reduce surface tension between coolant and the cooling system components. The last decade has seen a push toward “wetting” additives. I am especially appreciative of this product’s water pump protection.įinal Fill with Coolant and ‘Super Coolant’ A flush with distilled water and pure distilled water rinse will keep the system in peak condition. The original coolant looked clean and tested okay on a 3-Way strip test. Rislone Hy-per Cool™ Cleaner & Super Flush is all that is necessary when a cooling system has been well maintained. Follow regulations and labels when handling coolant and additives. Make sure you have an outlet for the used coolant before draining the system. Waste transfer stations and local auto supply stores often accept drained coolant. Dispose of drained coolant promptly and properly. Note: Coolant is toxic and attractive to pets and children. Tap or garden hose water has never been used in the Ram’s cooling system. Despite this, I still flush cooling systems with pure distilled water. The system reduced water spotting on glass when we wash vehicles. We installed a whole house and shop water filtration system with a softener. Nevada’s city water and well systems are typically hard, mineralized water. Tap water should not be used in a cooling system. This level of preventive care is valuable. For Ram Cummins 5.9L water pumps, premature pump failure needs no encouragement. Some flushing compounds are harsh acids or abrasives that can damage the water pump’s seal or the bushing in an old style pump. The product removes deposits, neutralizes acids and prevents corrosion, scale and deposits. I use Rislone Hy-per Cool™ Cleaner & Super Flush. On this well maintained system, without signs of scale or a bad strip test reading, a quality flushing solution will loosen any gel or normal scale. Rislone Hy-per Cool™ Cleaner & Super Flush The new cap at left is 16 psi rated to restore the cooling system pressure and rated boiling point of the coolant. Holding at that low pressure indicates a balance spring issue. OEM radiator cap leaked down steadily to 5-6 psi over several tests. These pipes and hoses are readily accessible in the engine bay. Since the heater core is buried within the HVAC plenum behind the dash, the easiest check is the heater core inlet and outlet pipe temperatures. If the engine shows a normal operating temperature, and the heater is not blowing hot air, I troubleshoot the coolant flow through the heater core and the HVAC blend door control system. If there is an issue with the heater temperature or the engine’s operating temperature, it’s time to replace the thermostat. The cap and entire cooling system called for a pressure check.īefore draining the cooling system, I want to know the overall condition of the system. The cold coolant level in the overflow tank has been fluctuating slightly, which suggested that the radiator cap may not be holding its rated 16 psi pressure. The current thermostat opens at exactly 195 degrees F and holds this temperature at cruise speeds under normal load. To assure a safe boiling point, the thermostat and radiator cap must be in good condition. This system has been maintained properly and shows no signs of clogging.Ī cooling system’s pressure affects the boiling point of the coolant. Cold areas are a sign of clogging or restricted flow. The radiator core, tanks, heater inlet and outlet and other cooling system points get tested for coolant flow. Pressure testing, inspection, flushing and fresh coolant will keep the cooling system reliable and protected. A cooling system flush and coolant change were due. Recently, the engine has been running just a few degrees warmer while trailer pulling on grades. I watch the temperature gauge under all driving conditions. At the current mileage, the hoses and radiator are due for pressure testing. The thermostat has maintained normal opening and closing temperatures since. I changed the coolant and thermostat at the last water pump replacement. During the first drive belt change, the belt tensioner and idler pulley were replaced. I replace parts before they fail in service. Protecting the cooling system is always a concern. Fortunately, each water pump failure came with ample warning. Given the track record for Ram Cummins 6BT and ISB water pumps, two water pump replacements over the span of 185,000 miles is not unusual. The cooling system has always functioned reliably on the road. The Ram’s cooling system came due for thorough testing and a coolant change. Here, the cooling system gets checked for pressure and holds the 16 psi rating without dropping. Periodic testing and routine coolant-antifreeze service will keep the engine, heater core and radiator in top condition.
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