Coolant quiz
I changed the coolant in my car and not wishing to go through a lengthy and messy flush I decided to drain the antifreeze and flush twice with distilled water.
What I wanted to do was have the least possible amount of coolant to take to the hazardous waste disposal site. I did not want any to be flushed into the sewers by draining it on the driveway, this is illegal around here.
Using the quantity of coolant removed each time I calculated the amount of original coolant left in the system and used this to determine the amount that required to be added to reach the 50/50 mix specified. I marked buckets with graduations in liters.
Two gallons of Zerex G-05 concentrate, 6" of 3/8" ID hose and a wide screwdriver for the draincock. You cannot say drain **** as separate words.
Is this discrimination against male birds?
Your challenge is to mathematically calculate the amount of coolant to be added at the end of the process and I will check my own figure. Easy eh? 
The SRT6 is said to have a coolant capacity of 14.5 liters.
1, I managed to get 9.5 liters out the first time.
2, I filled with 8 liters of distilled water and ran her up to temperature, with hot water going to the IC and heater systems. Then I managed to drain 8 liters.
3, I filled again with 8 liters, repeated the heating cycle and re drained 8 liters.
4, I filled with my calculated antifreeze amount and topped it up with distilled water. I then took it for a long drive,left it to cool down and topped it up again with about a liter or so of water. I think I will have to top it up again with about another 1/2 liter after another drive. It seems to take a while to balance out and that amount will bring me up to the amount I removed the first time. The coolant in the tank is now clear green, the blue dye in the OEM coolant tinting the very light yellow of the Zerex. You can now easily see the bottom of the tank through the coolant.
Your task if you decide to take the challenge is to calculate how much new antifreeze is to be added to make a 50/50 mix in the system. Your computer will not self destruct after you have read this as in Mission Impossible.
I was surprised at how much was trapped in the system, I wonder how much would have come out if I could have found a block drain.
The simple method would have been to drain, flush and then add 7.25 liters, but as I always say how hard can it be to do it exactly. LOL
Removing and replacing the belly pan was a major pain with the car on the ground and the two clips seem useless unless they are broken, they fit in the slots but fall out again. Are mine broken or bent or am I missing something?
Last edited by onehundred80; Sep 11, 2012 at 08:08 PM.