Your water flow comes out of the engine through the upper hose, into the radiator. The lower hose is cooler because the radiator has done its job; it cooled the water!
A clog in the radiator will do this.
The lower radiator hose is located at the bottom of the radiator.
usually on bottom under lower radiator hose if its not on the lower radiator hose it will be located on the lower back side of the radiator. look on the driver side. its an @$$ to get to.
The thermostat is not in the lower radiator hose of a vehicle. Thermostats tend to be placed at the end of the lower radiator hoses, not inside them.
Drain or petcock should be a the lower of rear of radiator or remove lower radiator hose
if there is no drain petcock on lower radiator tank, removing bottom radiator hose at radiator is the only way to drain radiator
Upper is hose connected to top of radiator, lower is hose connected to bottom of radiator.
It is on the lower right of the radiator and sometimes it is easier to take the lower radiator hose off.
It is beneath the lower radiator hose on the radiator.
If your truck is overheating!!! Then check the upper radiator and lower radiator hose's , if the lower is cooler the the upper the either the thermostat is not opening or the radiator is clogged
Check thermostat.
lower hose is on left bottom of radiator. passenger side.