Radiator
Remorse over an alienated friend is signified in a dream of a cold radiator; regret is a futile waste of energy but try to profit from the experience by thinking before you speak in future.
A hissing radiator in your dream is a sharp warning to stop considering a shady deal or furtive affair; if you give in to the temptation, you might mortgage your whole future.
If your dream concerned an overheated car radiator your love life needs unsnarling.
Radiator
An implement for heating an indoor space, a radiator as a symbol in a dream indicates a desire to warm things up in your life. Such warmth can be related to emotional issues, an increase in passion, or anything where an increase in desire is indicated.
A car radiator has the opposite implication—that things need to be cooled down in order to run effectively and efficiently.
Radiator
As the mechanism that cools down the engine, a leak in the radiator may point to an inability to cool down after an argument. In the physical body a radiator in a dream may represent the thyroid gland.