Yep. I've done complete flushes on past vehicles I've owned, even going so far as to install the old prestone flush kits. Not sure they even sell those.
You may recall a few weeks ago my finding an issue with a loose fitting on the radiator (automatic transmission line) that was keeping the pressure in the radiator from building up to the 12 to 15 pounds. As RonD mentioned in his excellent response to that question, the pressure never got high enough in the radiator to push the anti-freeze into the overflow tank, and even while it was at the full mark, my radiator was always low, as it was leaking from this fitting, and instead of pulling anifreeze from the overflow tank, it was drawing air from the loose fitting. Now after three weeks of the radiator staying full and holding pressure, the heater core takes a hike.
Now that I think more about it, additional symptoms of the heater core leaking were that at the time (a few days ago) when the heater core was suspect as leaking, I've been using the A/C, and I heard what I thought was debris or leaves in the fan compartment; the sound resembled that of the days when I'd put a baseball card against the spokes of my bicycle rim. I'm thinking now that this was most likely antifreeze under pressure in the heater core leaking, spraying against the squirrel cage fan.
I too saw the youtube vids you mention RonD, one of which showed the mechanic cutting the air ducting behind the glovebox, cutting the top plastic bracket/cover of the heater core to remove it, and some other various shortcuts to keep from pulling the dash. If I do replace the heater core, I'll do it the right way, and pull the dash. However, I live in Central Florida, and right now we are having our "Africa Hot" summer. Heat is not an issue, so the heater core is going to stay bypassed for now.
Last edited by bucko; 07-22-2014 at 01:11 PM.