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Why?


Fourpot

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I have a Cherokee XJ 4.0 litre Ltd.  I have just had the radiator out to fix an oil leak on the engine (sounds nuts but taking the rad out allows the oil leak to be reached). Anyway, Apart from the two connections for the engine coolant hoses (top and bottom hoses) I found that the oil line from the engine to the oil cooler goes via the main radiator, going in and coming out at the same side, so it would seem no actual flow across the radiator.

 

Anyone know why it does this? I'm not sure if the oil goes through the rad on the way to or on the way from the oil cooler. Is the oil normally hotter than the coolant, so running it through the rad brings the temperature down a bit before it hits the oil cooler? Or is it to create some sort of harmonising of temperatures of oil and water?

 

Intrigued...

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