I was flushing out the rad, as the water is constantly brown - stupid old cars. And in my ignorance I never realised that the cap covering the g/box (right next to the block on the top) wasn't on it, and that all the water from the hose filled it up.
The cap hasn't been on the g/box for a long time, so I'm thinking I should really flush it out.
Anyone have any thoughts on the level of problems im going to run into?
Ben