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black coolant
on my 72 c10 509 merlin 3 i have been driving the truck all summer but after the top radiator hose popped of i was refilling the radiator with the type of funnel that you can adapt a radiator cap to the bottom,when i look in the funnel on the top the coolant is black but when i crack the petcock green coolant comes out,i also noticed i am loosing oil somewhere but not burning it or leaking.thanks for the help
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