Interesting "problem." Washer fluid ran out, and bought a normal gallon sized jug. But it overflowed after adding less than 1/4 of the jug. I figured maybe a trapped air bubble or something. Ran the washers, they sprayed the new fluid immediately. Level in the fill spout went down the expected amount for what I sprayed, and could only add another splash.

I know the reservoir is bigger than that, right? I swear anytime I've refilled it before it was almost the whole jug. What could cause this? Thanks in advance.

 

https://techinfo.honda.com/rjanisis/...3/R21313OM.PDF

Page 326.

2.5qt for U.S.
4.8qt for Canada

If the pick-up is via a hose, it's possible the hose has broken or become detached, and the pump is not drawing from the bottom of the reservoir.