My Volvo leaks coolant from a hose under the engine passenger side, you can see drips in that one spot and there's no other area leaking that I can see, it has 170k, runs and drives great. I bought it from a family friend in California and it's winter where I live(pretty damn cold), been driving it everyday using the heater so wondering if it has anything to do with that. When I first started driving it it leaked nothing at all but if it's left a few nights outside you can see a puddle on the ground. There's no other leakage anywhere. The hose is like a slinky and you could compress it, that's my best way of explaining it I don't have a picture. All help would be greatly appreciated thank you.

 

hmm, is that a big hose, almost like a clothes dryer vent hose? thats just the heat riser, it goes from a riser plate on the exhaust header to the bottom of the airbox. totally unnecessary, and doesn't have coolant in it, so the coolant is coming from elsewhere.

common sources of coolant leaks are A) the water pump to head seal, this is on the top of the water pump, and you'll see a small puddle of coolant on the top side of the water pump. B) the water pump shaft seal, this causes drips under the shaft of the water pump. C) any of the coolant hoses, radiator, overflow bottle, should be obvious, will be white crust accumulated. D) the heater hoses at the back of the engine, and finally, E) the head gasket, if its tired and ready to fail, you can have a coolant leak under the exhaust ports between the head and block, typically around cylinders 3-4 (the rear most 2).