I use the Peak Global Lifetime, diluted 60/40 with distilled water.
http://peakauto.com/products/antifreeze-coolants/automotive/global-lifetime-full-strength/

Features a patented non 2-EH formula that is phosphate-free and silicate-free.

I've been very happy with this, and added "water wetter" my van has never ran so cool.
https://www.redlineoil.com/Products.aspx?pcid=10

Last summer, I rebuilt the AC and took extra care to make sure the coolant was flushed and filled with the best option I could determine.
Since I only drive my van in the summer (Michigan), and mostly highway with little traffic, I went with the (82-77 degree C) Radiator Fan Switch from Bus Depot.
http://www.busdepot.com/25195948175my

Here's a great write-up on GW, on the cooling system.
http://www.gowesty.com/tech-article-details.php?id=74

My approach... seems to be working well.

Jack R.
84 Wolfie (with a 2.1L)
N. of Detroit

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Thomas Casal
Sent: Sunday, April 2, 2017 4:03 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Anti-Freeze opinions

What are your guys thought on Vr12? it adds the additives back into your coolant and creates an optimal pH if you use it every 6 months they claim you'll never have to change your coolant again.  I haven't had the balls to try it on my 2.3 liter gowesty motor so I'm changing the dang coolant every two years like I'm supposed too but I would love to just put vr12 in every
6 months.  Peace tom

On Apr 2, 2017 10:54 AM, "Dan N" <dn92610@gmail.com> wrote:

I use Pentofrost too. blue in color

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