[whincup]

Gwagensteve wrote:

Or you can bolt on a viscous clutch fan and not give any of it another thought.

Use a thermo if you have to. Use a viscous clutch fan if you can.

having now done both i definitely agree. viscous fan without a shroud cooled better than my thermo fan in a (dodgy) shroud, and despite what people say there really isnt any noticeable power difference. knowing what i know now, id prefer the clutch fan, however I dont have the space between the engine & radiator. my thermo even had to go on the front, again something i've always hated.