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