Yeah, I read a few articles, and that one mentioned Dodge specifically which
is why I copied it over. From most of the stuff I read the main warnings
seem to be about mixing the new kind with the old kind. Some articles had
very specific recommendations about what to do about changing types
(including completely flushing the system, as Bernd says). Nothing I read
sounds very sure, there seems to be a lot of confusion.
The main question about it is if the previous owner of the truck in question
threw some orange in on top of the green, is it possible that could account
for the corrosion he experienced?
As far as the 5.9L water pump, that was an admission by Preston, I'm sure
Prestone is going to admit as few problems as possible. They may have had
someone actually prove that it corroded a pump in a 5.9, but they're sure
not going to extend that admission to anything else willingly... hehehe!
Some other stuff I read about the orange and water pumps talks about the
silicate inhibitors (I think?) on the pump seal reacting poorly to the
organic acids.
- Alex
> It's an interesting article...and the author contradicts himself several
> times as well. So, "...recognizes the possibility of a problem with Dodge
> truck 5.9-liter V8 water pumps"...so I guess it's ok for the 5.2L
> water pump
> then?!? What kinda crap is that?
>
> It's true though...if you're going to use the "Orange Stuff" (as
> some people
> call it), completely flush the system with water...don't just add it in
> unless it's only for a short period of time.
>
> I've been running the Havoline "Orange Stuff" since mid 1998 without any
> problems to the cooling system. And yes, i've checked it several
> times...including the water pump. No corrosion or damage.
> (Granted, I also
> change out the fluid every year.) My wife's Jeep also runs the same stuff
> since late '98 and again...no problems.
>
> It's interesting to see how people suddenly jump on the
> "Environmentally and
> Mechanically Unsafe" Bandwagon.
>
> $0.02
>
> - Bernd
>
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