Hi all,
I am hoping to change the coolant in my 2002 A4 over the coming weekend as I only bought the car a few months ago, and am not confident that the correct stuff is in there!

Have had a trawl through the forum and cannot find any "Ho To" guides so hoping someone might be able to walk me through it.

I'm presuming I can drain the sysyem by simply removing the bottom rad hose?
Then flush through with Tap water a few times to remove traces of old coolant etc
Is there a bleed screw that I need to remove/release before refilling with new coolant? Where is it located if so?

I know I need to use G12 Coolant. Do I need to use this alone or can it be mixed?
If I mix, do I use only DI Water?

Is there anything else I need to do after this?

Thanks in advance!
PJ

 

I believe the G12 bottle says to use tap water. 50/50 is the general mix, you can modify it for colder temps. There is a bleeder on top of the hard coolant line that goes on top of the intake manifold. Good luck! Check audidiy.com or audizine for a how to.

 

wouldnt mix with too much water if u live where it gets cold.

 

The G12 bottle will actually list what proportion to use based on the temps you expect to see. Approximately 50/50 water/G12 mix is what I put in mine, and I live in Minnesota - IIRC that's good down to a pretty low temperature.