AudiS4guy - NorCal

I have had a coolant leak and have not had time to go to the dealer to get g12 coolant. So i've been adding water in it until I could go this weekend. So I'm assuming water carries more heat than coolant? I was stuck in traffic yesterday and the coolant shot to about 110 (I had my vag on me at the time) when traffic got gon again it dropped down back to about 93. I have never seen the coolant jump that high before. Is it because I have a mixture of more water than coolant? TIA~!

2000s4biturbo::Uli

but you need a healthy mixture of coolant so it wont freeze.

Mike2kS4

Ding.

ryans4

once you hit traffic and your radiator started to heat soak, the temps went up.

It also resists corrosion. I believe most go with a 50/50 mix, though you can thin G12 down to 35% if you are willing to give up low range temps.

Not sure what about G12 makes it cool the car better than water, but it keeps the water from freezing and keeps corrosion in check.

Mike2kS4

You also need coolant to lube your pump and keep galvanic reactions and such in check.

2000s4biturbo::Uli

oooooh what do i win? 8-P

Taner Halicioglu

is to prevent freezing and boiling.

Is your dealer that far away from you that you can't stop by and pick up a $12 bottle of coolant?

-T

AudiS4guy - NorCal

would this explain my temps jumpin up to 110+ during idle? Maybe i just never noticed it before until I had my recent leak.

Gator Al (Al)

A ding!

DAP@EPL

If not then its not a problem. There is a range of acceptable temps that all show as vertical on the gauge.

-Dave Pramanik