had oil cooler rebuilt. about 2 weeks later my water temp goes up about 10 degrees higher than normal. notice truck is running hotter , but not over heating, cause I'm using the manual fan about 40 % of the time. drained some coolant out, put it in a clear qt container & it looks a weird green color. look at it a few days later & on the bottom of jug there is what looks like oil. could the shop not have rebuilt the oil cooler correctly ? never had this until the rebuild, or could be coincidence?
help me on this one cooling issue
Discussion in 'Trucks [ Eighteen Wheelers ]' started by heavyhaulerss, Sep 24, 2016.
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Was oil in the coolant the reason for rebuild?
If so,are you sure it was flushed completely -
Water is heavier than oil so it shouldn't be that...
AModelCat Thanks this. -
Its not soot is it?
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Must not be a factory oil cooler. Or one big enough to do the job.
The other posters have covered the other thoughts I had. -
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Ever see a oil spill on TV, the oil floats on the ocean.
Big Don Thanks this. -
Fuel and oil both are lighter than coolant. When oil and coolant mix it makes a milky sludge. My thought was maybe the sludge built up at a restriction. But that's not the case. Anyway to post a pic?
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