Sc400 Radiator Hoses

[streetkit]

Please forgive the stupid question, but I'm new to these awsome cars.

I have a 92 SC400 that i am trying to get aquanted with. Which if the two radiator hoses is the return line back to the radiator? The upper or lower hose that comes up to what appears to be a thermostat housing?

[K9crew]

streetkit,

that's a good question ... the photo shows the coolant inlet fill plug next to the thermostat housing. The inlet hose from the bottom of the radiator (out from the radiator and into the engine) is connected to the thermostat housing. The other hose that's connected to the top of the radiator is the outlet hose (from the engine).

:)