7 blade vs. 10 blade fan clutches

[crrider80]

Hi, I have a 10 blade fan and a 7 blade fan. The 10 blade fan clutch is a bit less tight than the 7 blade clutch. Are these clutches interchangeable? If so, Is it a good idea to use the stiffer / tighter clutch? Thanks!
-Steve

 

[IJ.]

7 blade Clutch will die quickly with a 10 blade fan as they just don't have the Oil volume of the bigger 10 blade Clutch