Thanks guys. Nice to hear that I have not set off some irreversible
chemical reaction which will result in all the coolant hardening into
Jello or precipitating out some corrosive chemical with that
ill-considered splash of OAT antifreeze.

--
Mike "Rocket J Squirrel" Elliott
71 Type 2: the Wonderbus
84 Westfalia: Mellow Yellow ("The Electrical Banana")
74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano
KG6RCR

On 10/23/2007 11:47 PM Daniel L. Katz wrote:

> rocket:
>
> dexcool is eg based; no difference in terms of thermal properties or
> specific gravity. one cup either way is of no concern.
>
> long-life property of OAT is lost, however, if too much, i would guess 5 -
> 10%, of antifreeze used in mix is conventional.
>
> dan
>
> On Tue, 23 Oct 2007 17:06:33 -0700, Michael Elliott
> <camping.elliott@GMAIL.COM> wrote:
>
>> So yesterday I was trying to get my coolant system in operating condition
>> in preparation for a possible mandatory evacuation order (San Diego county
>> fires). I borrowed a working expansion tank pressure cap to replace my
>> failed one and was bleeding and re-topping up the system. Time to add some
>> more coolant and I saw that the stuff was orange. No more than 250ml went
>> in before I paused and thought, "Wait. This seems odd." I did a quick
>> Internet search and discovered that Dex-cool (Organic Acid Technology)
>> type coolants are not compatible with the ethyl glycol-based coolant I
>> have in my van.
>>
>> At this time I have bigger concerns than a cup of orange coolant in the
>> system. But for tomorrow: have I opened the door for some future problem?
>>
>> --
>> Mike "Rocket J Squirrel" Elliott
>> 71 Type 2: the Wonderbus
>> 84 Westfalia: Mellow Yellow ("The Electrical Banana")
>> 74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano
>> KG6RCR
>