It is almost identical to the factory Mercedes-Benz coolant, but at 1/3 the price. It is also an extended life 5/150K coolant. I have used a universal(also called Complete) coolant manufactured by ServicePro in virtually all the cars that I have worked on for several years now and have had absolutely NO problems with it. I had a heater core a couple of years ago that was 2/3 plugged with Dexcool gel(we sliced it open cross-ways in three sections. I have seen GM cars with chlorine contamination of the Dexcool so bad, that the engines had to be pulled and the core plugs removed to wash out all the Dexcool gel. In my area of CA, we have chlorine in our water and as we all know, chlorine and Dexcool don't work, besides all the minerals in the water. Some foreign cars for years have had the rubber valve seals on the thermostats and I have seen restricted flow and sticking with them in my 30+ years being an auto tech. On pulling the thermostat, I found the rubber type seal around the valve warped and loose(possibly blocking the flow of the coolant). I pulled the water pump, and besides being original, I didn't see a problem with it and no signs of leakage. You measured 99% water in the cooling system? The coolant is sure enough going somewhere that GM did not intend and shame on the owner for adding water. Universal coolants do not promise to deliver the corrosion inhibitor chemistry included in DexCool labeled products. While distiiled water and Dexcool is the recommended coolant mix, tap water and Dexcool is a very close 2nd. Thermostat failure? Not in my Northstar experience.Īftermarket cooling system flush chemicals are not for me. Sometimes an O ring leak can be seen on and under the drive pulley shaft and sometimes road draft removes all the evidence. Water pump cartridges do not fail to pump water the O rings fail and create (very slow) coolant leaks. Based on many years and miles of Northstar operation and maintenace. Thank you for your response an confirmation of no drain plugs. My Cadillac factory manual states that there are block drains on the early Northstars, but I have never found one on the later models. I am also putting Kool-It additive in as well as the GM coolant Supplement (12378255)that we started using at Cadillac back in the mid-80's(a real lifesaver). Can't put Dexcool back in because of the tap water and am using a universal coolant, which I have been using for several years without a problem or complaint. I flushed the system with a cleaning chemical and then ran the car for 15 minutes while putting fresh tap water in as the water drained out of the radiator drain hole. My customer requested the water pump change in addition to the thermostat that I recommended. Found no HC in the cooling system and does not build up pressure unexpectedly. Had lost the coolant and was refilled with water, but found no evidence of leaks. Could not duplicate the overheating, but found that it maybe had 1% coolant and 99% water. The car has 123K on it and it overheated unexpectedly. Why are you replacing the water pump (cartridge) and thermostat? To get even close to a 100% coolant change will require draining the radiator 2 or 3 or more times. A 3/4" socket will fit on the radiator drain plug. The best you can do is remove the bottom trim panel and them remove the drain plug from LH side radiator end panel. Always protect yourself with safety glasses and gloves when working with the coolant on your Sedona.I am trying to find the block drain plugs so I can do a complete coolant change. An anti-freeze leak can cause the temp sensor to record high engine temperatures in a 2003 Kia Sedona. If you ignore a small coolant leak long enough, you will run out of coolant, which leads to an overheated engine and other serious, but highly avoidable, problems. This video shows you where the coolant reservoir, hoses and connections on your 2003 Sedona EX are located and the steps needed to fix minor leaks.Ī few things to note about coolant is that it is sweet tasting and highly toxic, so it can end up in the dog's stomach pretty quickly. Otherwise, your Sedona may have a radiator leak. However, a coolant leak (aka an antifreeze leak) is most likely to occur where the hoses connect to the engine or radiator. Coolant / antifreeze can leak from the reservoir, radiator or any hose, in 2003 Sedona with the 3.5 liter engine. Engine coolant (which is also called antifreeze or anti-freeze) moves through the inside of your Sedona engine and keeps it from overheating. Leaking coolant / antifreeze is one of the more common types of leaking fluid from Sedona engines. Follow the steps in this video to see how to fix minor coolant (antifreeze) leaks in your 2003 Kia Sedona.
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