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Oil Foam in Fill Tube

In the 4.7L motor, the oil fill tube is in the front of the motor. In colder parts of the country, moister produced by the blow by gases, condenses in the oil fill tube due to cold air passing by it. Mopar has come out with a new cap and baffle. These two items have cut down on the foam build up. Still more work is needed to fully prevent the build up.

Below: The build up on the PVC valve

 Below: Foam build up pre the baffle and new cap install. This is running Mobil 1 oil. and winter weather.

 Below: Still get the nasty foaming after the baffle and new cap installed. This is with AMSOIL oil in the motor. I removed the belt driven fan and hope one side affect is less cold air blowing over the oil fill tube. But at least its just on the lower half under the baffle.
 Part numbers for the cap and baffle..... Below: New Oil Cap (baffle) part # 53032126AA List $2.10 Net $1.20

 Below: New Oil Cap Part # 53032389AC List $8.93 Net $5.10

 Below: Comparing the two caps.

 Below: Inside of the Oil fill tube after using the updated cap and baffle.

 Below: Showing of the baffle showing the oil foam build up.

 Below: Updated cap is nothing but a plastic cover over the opening of the original style of cap. Mopar had the right idea, but it need more then just being capped. Opps, sorry about the fuzzy photo.

 Below: Filled the cap with the foam that comes in a can. Jury rigged a way to keep the cap on while the foam hardened. Trimmed the over flow and sealed the cap to prodect the insulating foam.

 Below: View of the out side of the oil fill tube. Large surface area that allows the moisture from the motor crank case to condense on and turn into "oil foam".

 Below: Insulated the outside of the oil fill tube with pipe insulition. Cut and pressed in place to fit. Its all held on with cable ties. Yea I know it's ugly as sin but this is still in the testing stages.

 Below: Same as above just with the foam filled cap in place.
 Only cold weather and time will tell if this is heading in the right direcition. More up-dates as they happen or requested. Last update 01/29/2005

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