Fluids & Chemicals

Flushing Coolant from the Jeep Grand Cherokee Radiator

Flushing Coolant from Jeep Grand Cherokee's Radiator

The Jeep Grand Cherokee is a well-known and high-quality SUV. However, if it is not properly maintained, the coolant can become dirty and clog the radiator. This article will provide you with step by step instructions on how to flush out your coolant in your Jeep Grand Cherokee’s radiator so that you do not have to worry about breakdowns or overheating any longer!

Drain Old Coolant

Flushing Coolant from the Jeep Grand Cherokee's RadiatorThe first step is to find the radiator drain plug and remove it carefully with a wrench to avoid spilling any coolant on yourself or flushing dirty water into your engine bay. Next, position a bucket under the opening of the radiator cap to catch as much fluid as possible when you release pressure from inside with another wrench. After all has been removed, replace the drain plug before unscrewing the radiator cap and removing it as well. On some models, you may have to loosen a clamp first while on others there is no need or they are plastic caps that can be pried off with your fingers. Make sure not to lose any gaskets in this process!

Flush Radiator

Next, clean out all dirt from inside by pouring about one gallon of coolant into the opening and letting it flow around for at least 20 minutes before checking if there’s evidence of water or debris left over. If so, try using a hose – preferably an intake hose connected with a screwdriver attachment for ease of use – until air pockets release from cooling system without going past manufacturer-recommended levels which vary according to year/make/model.

Fill New Coolant

Flushing Coolant from the Jeep Grand Cherokee's RadiatorClose the radiator cap again and replace it securely before turning your engine on for a few minutes to make sure there are no leaks anywhere. If so, shut off Jeep Grand Cherokee immediately and consult an expert mechanic! Finally, fill reservoir tank with coolant until you reach manufacturer’s recommended levels indicated by sticker near its base then re-attach its cap tightly before starting up vehicle once more and driving around while watching for abnormal sounds underhood that might signal overheating or other issues. Again – if you have 40% of more fluid drained from your radiator on first flush than what is considered normal according to specifications in owner’s manual (i.e., year/make/model), do not continue flushing until the issue has been addressed by an expert mechanic.


The steps are easy and can be done with simple tools that you may have around the house. Flushing your water at least once a year is recommended by most manufacturers, although some say it should be every other year or every six months.

Once removed, clean up any spilled fluids immediately because they will permanently stain anything they come in contact with like concrete or asphalt. You can wear gloves if possible when handling this strong chemical because skin oils can intensify its toxicity. Throw away containers containing mixed fluids as well as their contents into the trashcan and use a separate fresh container to catch your car’s used coolant before discarding it properly according to local laws (check with your city).

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Andy Shane

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