Prior to making any repairs, verify the coolant level is not overfull. Note: Only use this tech tip if oil in coolant is verified, EGR cooler will be inspected for internal leaks.Īpplicable Models: 2003-’05 Excursion, 2003-’07 F-Super Duty and 2004-’08 E-350 and E-450 Follow the Service Procedure steps in this Tech Tip to correct the condition. The condition typically occurs when operating the vehicle under a load such as trailer towing, uphill driving or both. The coolant leak creates a low coolant condition, which may cause the engine to overheat or result in no cabin heat. Some vehicles equipped with a 6.0L diesel engine may exhibit those symptoms, along with oil in the coolant. When you are sure that the cooling system is clean, drain all the water and fill with recommended coolant solution.A Ford truck, SUV or van owner may complain of a crank/no-start condition, lack of power and coolant leak. Note that in some situations, the engine, transmission, radiator, seals could be damaged already and those affected parts would have to be replaced in order to permanently fix the fault. There are different procedures that works but I have used the one that I explained above and it has been very effective and without any negative effect. Air pockets will reduce the lubrication at the bearing. Foaming solution will cause air pockets which is not good for the bearing of some type of water pumps. The detergent is meant to be in the cooling system temporarily just for the purpose of cleaning. You may also change the cooling system's hoses, as many as you can. Remove the water from the cooling system, return the cleaned Thermostat or put new Thermostat and replace with recommended coolant solution, then bleed the system properly following the correct bleeding procedure of the particular car. If there is a large amount of oil in the cooling system, you can keep adding the dishwasher detergent as you flush the cooling system.ħ. Drain out the content of the cooling system, put a hose of running water in the radiator or expansion tank to flush out the soapy water while the car is running until the water that is coming out from the drain plug or bleed plug is clear. Repeat this step till almost all the oil has been dislodged.Ħ. The heater should be put ON at this stage too. Cover the coolant reservoir or radiator and idle the car for 30 minutes or drive around for about 20 minutes. Refill the cooling system with water, bleed then add a quarter liters of dishwasher liquid detergent again. Through the coolant drain plug located mostly at the bottom of the radiator, drain out the entire content of the cooling system (not everything will come out though).ĥ. After the engine has attained operating temperature, still run it for 5 minutes.Ĥ.
#6.0 powerstroke oil in coolant reservoir full#
Start the car, turn the heater on and to full blast and run the engine until it attains operating temperature. Tighten the expansion tank or radiator cap back.ģ. Open the expansion tank cover or radiator cap and pour about a quarter liters of dishwasher liquid detergent. It is advisable to remove the cooling system Thermostat (if convinient) before the cleaning process begins.
If the seal or O-ring is damaged or not well fitted, it can cause oil and coolant to mix together.īELOW ARE THE STEPS FOR REMOVING OIL FROM THE COOLING SYSTEMįollow these steps in order to fix a oil infested cooling system:ġ. Bad oil cooler seal or O-ring: Oil coolers are mated to the engine or transmission using either seal or O-ring. For engine that is internally very clean and has fresh oil, the color will be brownish but will have the white mayonnaise too.Ĥ. The substance will look darker and may have whitish mayonnaise in addition if it is engine oil that is mixing with coolant. The mayonnaise looking substance in the cooling system will look like mud with a brownish coloration and will also have ATF smell if it is oil from transmission that is mixing. See coolant versus water in cooling system to see the effect of using water. One common practice that kills the oil cooler fast is the use of water instead of coolant in the cooling system.
A common cause for this is the use of water instead of coolant solution which is meant to prevent corrosion in cooling system component. This element that separate the oil from coolant can rupture, allowing them to mix together. The chambers are separated by fins that make heat transfer from oil to coolant possible. Faulty engine oil cooler or heat exchanger: The oil cooler has separate chambers for oil and coolant.
#6.0 powerstroke oil in coolant reservoir cracked#
A cracked cylinder head might not be easy to diagnose easily and it may require a technician with good experience to diagnose it.ģ. Cracked cylinder head: A cracked cylinder head can cause oil to mix with coolant at the spot of the crack. Leaking cylinder head gasket: This can happen when the engine overheats causing damage to the cylinder head gasket.Ģ.
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