I have removed the stock over flow coolant tank. Instead replaced it with a long cylinder which sits aside my radiator... That isn't the important thing, as it's essentially exactly the same, but the manual says to full in the coolant res and fill between the lines, well I don't have this option now.
It's completely empty now, and I have 1 liter of coolant, I want to know do I pour in the neck filler just to the side / below tank on the right?
What is my best method here?
(pic just so post stands out).