You might check with the parts department and carry around some spare coolant and check it when you fill up. You know what to look for. Watch it and the resevoir over the next couple of weeks. I'm seeing 'dried' coolant so I'm starting to think a crack. But it is dried. Give these folks a call and ask if they have any suggestions: Auto Careers Development Center - Hybrid and Electric Vehicle Repair Training Bob Wilson
I just replaced the fluid in my 2001 only took 1hr the bleed nipple in the picture is used to bleed air from the pump and lines so there would be a little fluid leaking from the valve when they bleed the air from the pump wipe it down and have a look in a day and see if it comes back.
