My vehicle uses coolant but I don’t see any leaks:
Your intake gasket may be leaking. Why? The intake gaskets seal water that flows between the two sides of your engine. Many times when these gaskets loose their ability to seal it allows coolant to leak into your engines crankcase. Check your oil level. If the oil level is high and or if the color of the oil is milky or brown then you likely have coolant getting into your crankcase. Immediately have your mechanic inspect your engine. Do not drive or operate your vehicle with this condition as bearing failure will be likely. The coolant in the oil takes away the oils lubricating properties.