disappearing windshield washer fluid....

[redryder]

My 2002 birdy has an admittedly minor (but still annoying) problem: every month when I do my monthly maintenance check (tire pressure, engine oil level, interior and exterior lights working, w/w fluid level), I hafta add a significant amount of w/w fluid.... I haven't actually measured it, but it's more than a cup, and less than a pint. My daily driver (an '02 Ford F-150) uses far, far less, and I use the w/w fairly often. In contrast, I generally never use the bird's w/w. The reservoir cap is tight, and there's never a leak on the garage floor, or at my usual parking space at work. Any ideas? Anyone else experience a case of the disappearing fluid?

[George]

I have a 2002 as well, but have not had this issue