Reason its free, its not watertight, it lets out a tiny bit of water around the lid, i bought it 2nd hand and have used it for about 8 months, its never bothered me.
Im almost sure the lid needs a rubber washer, this is why its leaking.
For this reason im giving it away free of charge.
Again i will say the amount of water that leaks, is slight, stick a towel over the lid and it will absorb most of it.
Off coarse as you use more water in the day, the leak goes away, as it only happens when you drive and water slooshes to the top.
Email me if your interesred, will not post, collection from Bristol only