94 Suburban ,100 degree + temperature,110 in big Bend,I put this fan clutch because it draws more air,a little noisier,otherwise idleling or getting back in after sitting in the heat the AC would run about 10 degrees warmer,now with the severe duty clutch it will drop to 40 degrees out the vent.Does this seem ok? This is 134a,the first year.Any comments please