Well, I had a look today, opened up the tstat housing. There was still coolant in it below a certain level. looks lucky for me. Most of the coolant was on my friend's driveway. The T thing did go, but it had been glued, and only a bit of the glued part had come out until I started it to get it off the trailer. Engine doesn't miss, or have problems like that. I put in a new Tstat, and I'm trying to get a new tee, which for those interested and needing the same part is called a heater hose junction.
Before I started it
I filled the engine as full as I could with water, and started it. Engine started fine. no misses or anything. Hopefully it will work without needing a new head gasket.

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All it takes for evil to prevail is for good men to stand by and do nothing.

Too many people tip toe through life, never attempting or doing anything great, hoping to make it safely to death... Bob Proctor

'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic