Hi Guys,
I have a GU 4.8 on dual fuel and just wondering if anyone out there has had any probs with the heater not working real well. I've heard a few ideas on why it's not working and a mechanic said he is 90% sure its the heater core. Is it possible that the LPG system is affecting it? Also what sort of money would it cost to get it done, as I couldnt do it myself.

Thanks in advance

Tobes