I have a reply from the local (UK) Evans distributor who says..
"Thx for you e-mail. I would recommend NPG-R for the application such as the KV6. The price is 34.50 GBP per US gallon (3.77 litres).
I attach a brief sheet." But then he wud - wudnt he?
I have asked the following Q's....
As this is a stand alone product does the cooling system need to be flushed prior to use?
What effect is there in the product of any residual EGW (ethylene glycol and water ) in the system?
As an emergency get you home measure can water be added to the system if NPG is not available?
Would the system need complete changing after (3) or would the water boil off in use, leaving no harmful effects?
Is the heat transfer equal to or better than EGW or are additional cooling measures required, as the cooling system also cools the engine oil, gearbox oil and IRD on the Freelander?
What is the effect of oil contamination on the product or ingress of NPG into the lubrication system?
will let yu know the reply