My genius g/f put about a half cup of water into her car's power steering tank, her thinking it was the windscreen washer tank. I noticed what she was doing about 15 seconds after she started before I stopped her.
So far there's been no side-affects, but can I expect any do you think?
(thank blimmin goodness it wasn't into the brake fluid reservoir!)
Memo to self: Never, ever let a woman under the bonnet of a vehicle... not even to top up coolant.