On refilling the washer bottle I proceeded to drop the top down the front of the engine and onto the sump guard! Klutz! Fix? The top of a half pint milk carton from Tesco fit perfectly. Looks a bit odd with a green lid but what the hell.
Had exactly the same thing happen with mine. I used a lid off a bottle motoroil, until I happened to stumble across the original top at the side of the road whlst walking home a month later!
I've got a bright orange child proof lid from a tub of multi vitimins! ( for no other reason than it fitted properly). Do you think this will affect the resale value?