I ran the prestone flush through the system drove around then drained..did this process 4 more times with just water..took out overflow tank and thourouly washed it (man that was where all the gunk was coming from)..then filled the radiator to the top with distilled water..bled system..runs nice and cool around 176..low coolant light is on (just pull it and replace right?) questino is.. how do i know if i have enough fluid in the system for sure? i am running like 85% distilled water and 15 coolant.

 

why are you running 15/85??? run 50/50. and its full when its to the top of the radiator after the thermostat opens. then fill the overflow tank to the right amount.

 

In Chicago, you will need at least the 50/50 blend of anti-freeze and distilled water this winter.

 

The low coolant sensor is a problem child and often stays on for a few days after the coolant has been below the sensor.

To see if it is full, open the radiator cap when the engine is cold. It should be full to the top. Check for proper level in the remote reservoir at the same time.