ok to mix G12 with tap water???

[braker15]

I changed coolant the other week, used tap water, wanted to see if its cool?

[KNaudi]

distilled water would have been a better choice.

[BJ Thomas]

You will be fine.

Like mentioned above distilled water is the best choice but since we are talking 2.7T's here it will most likely start to leak that water/G12 mixture out before it has a chance to cause any cooling system issues

[B6UltraSport]

Wouldn't it be best to ask that question BEFORE you used the tap water?!

[braker15]

I was too lazy to go to cvs, and get it.
my ressy bottle is cracked so I might replace it and pour some distilled in it.

[braker15]

Also what is the correct way of changing coolant, I just disconnected the lower radiator hose

[ECS Tuning-Audi]

Basically, pulling the lower radiator hose is correct. Here's a handy DIY-> http://forums.audiworld.com/showthread.php?p=14480582

Aaand if you need coolant, click here.

[drkenan]

You will be fine.

Like mentioned above distilled water is the best choice but since we are talking 2.7T's here it will most likely start to leak that water/G12 mixture out before it has a chance to cause any cooling system issues

This made me LOL because it's SO true in my life.

[P0234]

It all depends on your local tap water. If its hard, all of those minerals will end up where you want them the least. At least you didn't fill it with Prestone, but geez, give your car a little more respect.

[Capt. Obvious]

You're fine unless you have particularly hard water where you live. One of the reasons G12 is used in our cars is because European water is generally very hard and the G12 is formulated to keep the minerals in the water from depositing in your car.

[shorterthanrich]

^ what he said.

But yeah, try to use distilled next time...it's worth the $2 for a few gallons...

[BITRBO]

Wouldn't it be best to ask that question BEFORE you used the tap water?!

LOL yeah, I love this sequence...

I changed coolant the other week, used tap water, wanted to see if its cool?

Also what is the correct way of changing coolant, I just disconnected the lower radiator hose

Sorry OP, but you kinda set yourself up for a little flamage there

[coreyj]

never had a problem mixing with water... just dont mix with green coolant or you will deteriorate everything

[braker15]

I decided to do the hi temp switch and the bottle soon, so iam gonna replace coolant, I kinda feel guilty using regular water lol