MingsS4

Since I'm replacing my Aux Coolant Pump, I figure it's a great time to flush the cooling system and replace with the latest/greatest coolant.

Are there any chemicals/additives recommended to flush the 2.7t cooling system?

What is g12+ and how does it compare to a OAT coolant?

TIA

donromani

You have to use G12 - do not use any other coolant additive. G12 is a neutral mixture that will not react with any of the sensors and other crap in these cars. If you use regular coolant you can get a buildup of gunk and damage engine components.

You can flush with a normal coolant flush additive from autozone etc. Just follow the instructions on the back (it takes about an hour to flush the system correctly). Then mix the G12 add. with some distilled water (I do a 40/60 g12 to h20 mix for my geo. area and driving habits)