Whats a good recommended coolant/anti freeze i believe theres certain types to avoid and certain additives which are a must??? A halfords shelf stock would be ideal.

 

Halfords advanced antifreeze its around £24.
5 litres antifreeze concentrated.
5 litres of distilled water mix the 2 50/50 .
You should be left with around 2 litres as a top if needed for over the years

 

tbh, you don't need distilled water.

We live in a very hard water area. The amount of limescale deposited from 7 litres of water is next to nowt.

Worry about something with a continuous flow: shower-head, taps, boiler, kettle etc. Not your enclosed engine.

Oh.......and DO do a search on here for how to drain and refill without airlocking.....or your next thread just might be, "How do I stop my car overheating?" or "Why have my head gaskets gone?"

 

Ok thanks guys i defiantly will do.