Some additives like Water Wetter are good... if you are  having cooling
problems or  running a high performance engine that is overwhelming a stock
cooling system.  Others symply recharge the anti corrosion additives in old
anti freeze.  In most cases though coolant additives (and other stuff) put
in by the corner garage do their best job at improving the mechanic's
profitability.  In other words... they are unecessary.

Gary
----- Original Message -----
From: John Rodgers <inua@HIWAAY.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Thursday, December 07, 2000 12:29 PM
Subject: Re: Coolent Additive

> Redline makes a coolant additive called Water Wetter. It's intent is to
> improve the contact between the water and interior surfaces of the cooling
> system. I use it mixed with Havoline Orange coolant in the  cooling
system, as
> well as Redline MT90 synthetic oil in the  manual tranny in my 88 GL.
>
> "John W. Parkins" wrote:
>
> > I was talking to a good vanagon mechanic, and he said that they add a
> > "coolent additive" when they replace the anti-freeze.  Has anyone heard
of
> > this? I'm wondering if I should use it as well.  Thanks.
> >
> > John
>