Duratec coolant recommendations

[Lancefitzgiben]

Hey guys, this has probably been beaten pretty bad but I've searched around and I'm still looking for an answer.

 

I've got a 2014 485S, coolant is original so really needs to be flushed out and replaced. What's the default coolant? I do want to run an antifreeze mix as we get winters here. Amsoil antifreeze seems to be compatible so that's the way I'm leaning.

 

Also, when it comes to bleeding and the heater, I know I need to fill and bleed with the heater circuit open - is there a protocol for when to open/close the heater valve during normal use? My coolant temps have been higher than normal and I suspect air - system hasn't been opened but that valve has been manipulated both warm and cold.

 

Thanks for any insights

 

- Tim

[BlueMax]

Why not use Motocraft VC-3B Coolant/Antifreeze, it's OEM for Fords.

[Lancefitzgiben]

Sure! This is the sort of input I'm looking for. Default is always Amsoil since I run it in other vehicles. I've already had to step out for the oil in the Cat, so I'm certainly not glued to Amsoil.