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  Jim Grant's Tech Tips

'96 Dodge Pick-Up, Cafe Latte Crankcase

Q: The anti-freeze is obviously mixing with oil in my '96 Dodge Pick-Up. However I don't feel or see any difference in the performance of the truck. I am not losing any oil or anti freeze. I know the first thing we could assume is that there is a blown or leaking head gasket. My question to you is... about 4 months ago I changed the water pump. Could there be any point or location at the water pump that would allow the oil and the anti freeze to mix?

- Joe

A: Depending on which engine your Dodge Pick-Up has it is possible to create a path that will allow coolant leak into the crankcase. It does not take much anti-freeze with the oil to whip up a good Latte inside the engine. On V-6 & V-8 engines the timing cover is located behind the water pump. When replacing the water pump you have to remove some of the bolts that hold the timing cover in place. There are coolant passages that run through the timing cover. If the timing cover gasket is disturbed, a coolant passage can become an internal coolant leak. The fix? Remove the water pump and then timing cover to replace the necessary gaskets. Use care if you're still operating the engine. It only takes a drop of antifreeze in the right place to damage a critical engine bearing.

 
     
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