Main dealers will always vacuum fill, too much risk if not but I've no experience with the N/A and if someone's found an alternative method. As I said before the 5 and 3 litre cooling circuits are quite complex with many places for air to get trapped.

 

Where are the bleed screws on an 2011 NA?

 

On top of the reservoir is the main one, not sure if there was a second one on N/A

 

Thanks, wasn't sure if there was more

 

I've found that for whatever reason, a number of indy shops insist it is not necessary to vacuum fill. I have a feeling these shops either don't have the equipment and/or don't know how to use it.