- Nov 6, 2013
- Funster No
- Hymer B574DL
- Since 2011 (tugger for 20 before that)
we are currently in our van with the heating on and it has started gurgling furiously. I’m guessing there is air in the system. The header tank is a bit low. Can I buy the top up fluid? If so can anybody point me in the right direction please?