With either a replacement transmission or rebuild on the cards, I still drove the car infrequently, just meaning I couldn't reverse so pushing it out of my driveway was the norm.
I still had a lot of fun in the car, taking it for bursts around the open roads around the hills of Canberra, and occasionally driving it to work on nice sunny spring days.
Next hit the car took was months later, one Sunday I took it for a drive, everything felt fine and I was only out for around 20mins.
Pulled into my driveway to find my overflow bottle was boiling; coolant system was overflowing into it and boiling off. Engine temp seemed fine however.
I had already flushed and replaced the coolant in the system a while before, so I suspected the rad cap since it was still original and looked worn. I installed a TRD item and refilled/reburped the system (a long and careful process in the AW11) and it was fine for a while yet.
Took the car all the way to Sydney to an AW11 BBQ and cruise, and the cooling issue surfaced again. After a great drive there and cruisey trip back down the coast to Macquarie Pass (my old stomping ground before moving to Canberra), I felt I shouldn't push the car just in case the transmission would let go, so just enjoyed cruising slowly up the pass at my own pace.
Halfway up, engine temp goes through the roof, I do my best to keep RPM stable to keep water circulating around, and it stabilises, only to do this a few more times on the trip up.
At the top of the mountain, It's really starting to lose coolant now, Wiso and I take a quick peek at it and decide to get to the Pie shop (5mins down the road) as quick as possible before letting it cool down and take it any further.
Car makes it within metres of the carpark before stalling, forcing me on the side of the road across from the carpark.
Everyone lends a hand once it has cooled for a while, we get it refilled with water and start the car and carefully watch the coolant flowing with the cap off, already suspecting BHG. Couldn't see any bubbles nor exhaust smell coming, so the long trip home to Canberra looms.
Apart from losing overdrive meaning car was sitting at 4,000rpm providing an absolute earache/headache, the car made it home without an issue, even with a fuel stop on the way.