[V8] Coolant type?

[Tony and Lillie]

On that front, I've worked on more than my fair share of VW Vanagon engines 
(don't even get me started on my hatred of them) and even with the blue 
stuff in there (most that I've worked on), the aluminum heads are ALWAYS 
pitted. Some worse than others, but I've never seen one that's not 
pitted/corroded. It seems to make no difference on the couple I've had apart 
with other coolants. So, as Cobram said, and I agree, change it at the 
intervals, even if it looks great. Same with brake fluid, every two years. 
Your master cylinder and calipers (not to mention ABS module) will thank 
you.

Tony

----- Original Message ----- 
Subject: Re: [V8] Coolant type?


> As for the cooling system electrolysis, this happens with ALL types of
> coolant, and more so with the "lifetime" coolants.  After coolant is
> spent, even the liquid gold Toyota Red and Audi Blue,  either from
> mileage or time, it turns from alkaline to acidic, that's what eats away
> at the metal in the system.  The additives in the coolant wear out.
> "Lifetime" coolant is taken to mean "lifetime" by most people (I wonder
> why), so these misguided souls don't change the coolant until they have a
> failure in the system which changes it for them.  "Lifetime" means a MAX
> of 5 years between changes, Evil Green, 3-4 years, MAX, but guess which
> kind usually NEVER gets changed and causes the most problems?
>
> Whatever you use, THE most important thing you can do is change it at the
> recommended intervals or earlier.
>
> On the GM front, they've paid off on lawsuits over Dex-cool, and there's
> a mountain of evidence about how craptastic it is, I don't think they'll
> give you a hard time over changing it out for something better.  I
> replaced the Dex-Cool in my mothers GM when it was less than 6 months
> old, she's taken in for warranty service at least 10 times since (love
> that GM quality), and the dealer never said a thing.
>
> BCNU