ironayne
09-09-2008, 09:11 AM
:1zhelp:I'm running a 2004 S4 and my coolant ran slightly low a couple of weeks ago. I topped it up with water, and have it booked in for a service. I explained that the manual says coolant has to be G12 based coolant. They garage informed me that it's OK to mix coolant makes as long as it's the same type of coolant ie. ethylene glycol based. Does anyone know if this definitely is good or bad advice? Thanks in advance!