I have notice lately that my coolant has been dripping and will run my reservoir tank to near empty in 2 days. The drip comes from underneath the car mid/rear of engine closer to passenger side. Its a 2001 Saab 9-5 Aero
The Bypass Valve at the firewall is leaking and must replaced. Very common issue
More about this Topic: Saab 95 (9-5) 1998-2008 Forum
Pricing for BYPASS VALVE WITH HOSES (heating & cooling hoses)