Howdy all, 04 f250 6.0, has a leak that is coming from top front, was running along the front of the oil cooler cap. I replaced the oil cooler and egr cooler last year, and replaced head gaskets this year, all ran fine, but recently a rather substantial oil leak. With everything mounted, I was only able to see the oil run from the front top it then ran back along where head meets block (passenger side) towards turbo end. That said, couldn't actually see where the leak was, so I've removed intake manifold to have a better look, hoping that perhaps the bolts in the oil cooler cover came loose. Some weren't as tight as I expected, but not loose either. Nonetheless, without the engine running, I can't see where the leak is coming from, eg. bad gasket in oil cooler etc.,

Is there anyway to apply air pressure (I have a compressor) to try to drive the oil out to see leak? I was thinking of applying air to the oil outlet which feeds turbo, remounting the oil filtre just to seal that while doing it, any thoughts, suggestions?

 

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