Looking for some advice for the engine coolant.
I am reading on redpants that 6 liters are required of the coolant, cooling system hold 12 liters and is diluted 50/50.
According to my manual 15 liters are required, meaning I must fill in 7.5 liters of the coolant?

 

If system is dry, never filled is what the manual states. You only put in what you can get out. And you will never get it all out by a simple draining process.