So i was doing a coolant flush on my 2007 ntro slt 4x4. I opened up the lower radiator drain plug on the driver side some coolant came out and then it slowed down and stopped, i also had the refill cap and reservoir cap opened up under the hood. i still saw alot of coolant in the refill/reservoir tank so i decided to go ahead and unplugged the lower radiator hose and nothing came out from there. i did some research and found that if you start your car until the thermostat opens u it should force out the remaining coolant, and i tried that i heard the thermostat kick in after 10 minutes and some more coolant came out but then it stopped but its still not completely empty can anyone help with this?