Hey, Jeff. How's CA?
Ok, I'm going WAY off topic here - has anybody had bad experiences with GM DexCool coolant in their >1995 GM car? I spent the last few weeks battling a leaky hose and this weekend I went to repair it. When I got the intake taken apart to reach the hose and eventually worked the hose free, I found the throttle body intake fully clogged with dried DexCool sludge. I took off the outlet hose as well and that nozzle was fully caked. So I took off the throttle body and started working on getting the clogs out. That wasn't going too well, so I took apart the throttle body and found the coolant reservoir on the bottom of the TB (don't ask me why they even need coolant routing through the TB in the first place) completely filled with dried sludge. So, now I know what caused the hole in the hose.
I've read a few websites relating DexCool problems around the nation with some people having to have head gaskets changed out. Luckily, I didn't have that happen (though that was my initial thought before finally finding the hole in the hose). It appears that if a coolant system using DexCool does not have the proper amount of coolant, the vapors from the coolant in the engine can condense and solidify into a nasty sludge. In my case, if found a nice stopping point and solidified completely.
Anybody else have any problems? I think I'll flush and go green.