I'm constantly adding coolant to the radiator every 5 days or so and I drive around 250-300 miles weekly. Don't see a puddle on the floor when parked so not sure where coolant is going. Recently changed out the overflow reservoir cause last one was cracked and same issue. Car doesn't overheat and there no white smoke coming from exhaust. Thinking about buying a new radiator and taking her into shop to have the hoses inspected

 

Also, should I use that Bar Radiator Stop Leak stuff? Was tempted to pour that stuff down my radiator, but not sure what else that aluminum solution will clog up so holding back at the moment

 

DONT USE STOP LEAK.

look closely where the upper hose enters the radiator....the other side (front) of the tank is probably cracked in that area.

 

the hardest leaks to find are the real tiny ones from worn stock hose clamps. when the stock hose clamps weaken they tend to leak as the engine cools off. I had a hard time finding a leak once until I went out to my car half an hour after getting home and saw the drips.