qcfarmer
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I am replacing the o-rings on a leaking oil cooler and I found plastic debris in the end cap. Any ideas where it could be coming from?
Oil cooler debris
- Thread starter qcfarmer
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David N
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I've always wanted to know too. Mine was the same way. Little black chunks?
I read somewhere it's part of a drain back valve or something in one end of the cooler. But my truck always started and ran fine. So I just cleaned it and let it be.
I read somewhere it's part of a drain back valve or something in one end of the cooler. But my truck always started and ran fine. So I just cleaned it and let it be.
qcfarmer
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More of a whitish grey. Truck sat for an entire year before I bought it so my mechanic thinks the coolant might have calcified.
I'm going to flush rad and go from there. There were only 4 passages in the cooler that weren't completely blocked and truck didn't run hot at all.
I'm going to flush rad and go from there. There were only 4 passages in the cooler that weren't completely blocked and truck didn't run hot at all.
David N
Active member
Mine had little black bits of what I think were plastic. And yeah almost every one of my passages were clogged too. And it never ran hotter than any other truck.
