i have problem with expension tank on 01 plate citroen c5?

[clowesy65]

expansion tank on my c5 keeps leaking near cap . have replaced bottle but not solved it .CAN ANYONE HELP

 

[Stuart L]

have you over filled the tank or did you replace the cap when doing the bottle as the seal does go on them

 

[Serious Sarcasm]

Hmm, well, i wouldn't know but, I think that you've overfilled, that's all i'm saying.