Just checked, 2 "T"ed hoses open. But there is an air pocket at the top of the radiator, at least while it's cold. No liquid when I took the small air hose off of the radiator top nor from the hose when I took it off of the thermo top. There was liquid coming out of the thermo hole. The air pocket surprised me because the fill tank level is higher than the top of the radiator. I stuck a piece of wire into the hole on the rad top where I took off the hose and it was open.

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85 300 SD ~ 115K
82 500 SEC Euro ??K
78 450SL 164K