well i've tried wd 40 it didnt work unfortunately, the fans turn easy enough by hand. Well at least i reckon they do, there aint much room to play with in that engine bay so its pretty much impossible to get near them as you all know. I reckon its going to be replacement parts, theres a lad on here selling the whole radiator and fans etc, anyone know if that can be replaced without the engine coming out or taken too bits?