Are these dry or wet sensors? I need to take out the N0. 2 sensor, and I need to know if the radiator will drain out.

 

The SA has one on the top of the radiator right under the opening for the cap. You might lose some coolant but not much. The FB sensor is at the bottom of the radiator and you will have to drain the coolant or suffer the consequences. If you haven't guessed they are both wet sensors. This is all off the top o my head so maybe someone can verify for us.

p.s. Mods this seems technical, maybe move out of the non-tech section?