loosing water

I own a 2005 durango every year around this time it starts blowing water out of the reservoir, the gauge doesn't get over halfway which is normal. The fan is working water pump works, I think its the thermostat, Anyone else having this problem with there durango?:sunglasse

I've put three thermostats in my Durango in the last 2 years. I believe the mopar thermostats are junk and I went with a NAPA one this last time and have NOT had any problems.

Thanks 98 sableGS for the input. thats what i was thinking it would be, i will replace it with a new one.:sunglasse