I wouldnt use the green prestone Id use the yellow presstone

 

You might want to do a little more research. If prestone thinks that green is a "one size fits all", why do they make orange?

But hey, its your car, and you obviously know a whole bunch about cooling systems. BTW, you can save an extra dollar by using tap water rather than distilled water. Afterall water does the same thing in every car. Good heat transfer and flows very well.

 

Hey Chris, you don't just top off your G12 with Prestone do you? G12 when mixed with other coolants clumps and turns to sludge.

 

nah I flushed the G12 when I did the water pump and timing belt

 

Apparently, they switched from G11 to G12 because the G11 wasn't good for something in the engine. To me, it seems safer to go with something that isn't so temperamental. If G12 turns to slugde when mixed with some stuff, that stuff is bad news.

I'm beginning to consider my car in safer hands with this Prestone than G12.

 

Whatever dude, If you want to put incorect fluids into your car, go for it.

 

I believe a 1996 A4 would have come with G11. Two years ago, when Metro Audi replaced the water pump and the stuck thermostat, they topped up with G011 V8C, i.e., G11. My local indy just changed the new thermostat, this time stuck at age 2, and the oil cooler, flushed the entire system, and refilled with green stuff. Since they did thoroughly flush the system and start from scratch, I am not overly concerned about this, but I find it interesting.

I thought the color code was green for 2-year coolant and red for 5-year.

 

I just changed my buddies timing belt/waterpump on his A4t 1.8. As well as changing the G12 coolant. Now the heater does not heat as well as it should. I have seen posts saying you are supposed to start the car and let it run with the heater on full for about three minutes. That did not seem to work effectively. Warm air comes out, but does not get hot. What could the problem be? Air in the heater core?

 

keep the cap off your coolant tank.. run the car and milk the upper radiator hose a little to try and get the air out.. do this with temp hi fan speed low.. will take some time, but it should get any air out of the system

 

thanks for the tip. the problem seemed to work itself out this morning.