good afternoon how is everybody.
i have a 99 caravan, 3.8, 145,000 miles van run very good except it has a water leak i cannot find. it goes through about 1/2 gallon a day. i notice a little gurgling in the coolant refill bottle. thanks for any help you can throw this way.

 

Check the steel sections of the coolant system. I had rust holes that developed. You can replace sections with rubber coolant hoses and fittings. Also, you might want to check your freeze plugs. Look under your car when the system is warmed up to try and pinpoint which area might be leaking.