Suggest you install a 'double size' water tank and change the water tank's fan motor to a new and good quality one. (tell foreman you want a good quality fan motor).

After re-fill water + collant, every day check water tank and add water if necessary.
(When re-fill fresh water + fresh coolant, some air bubble trap inside and cannot get out, must drive the car than the air bubble will gradually get out to the top of water tank, that is why need to check water level every day and add water )