I have a 95 4runner with 180k miles and I'm slowly losing coolant and I can't figure out where the hell it's going. I have a relatively new radiator and the hoses all appear to be fine. No coolant in the oil so I ruled out head gasket. It usually takes a couple of weeks for it to go about 1/2 gallon low. Once in a blue moon I'll see some drops on the driveway but typically nothing evers shows on the ground or engine. I can smell the coolant when I get out but no visual. Any suggestions??? I was thinking about having it pressure testes.