My total is 32 at 3400 rpms (as per Don).
But, today in lovely DFW the official temp at Arlington airport (1/4 mile from my house) is 98 degrees. I parked the car in the driveway and let it idle.
With the viscous 7 blade fan and no shroud I was amazed at how well it cooled. It took 5 or so minutes for it to warm up, and after the stat opened at 180 degrees the needle nearly stopped moving. I let it idle for another 5 minutes and barely moved. I ran the motor up to 2000 rpms and held it there for about a minute and it only got to the 190-195 range.
All this without a shroud, of which I will be getting one very soon.
...I am done with electric fans. Even though the Benz fans seems to work great, it still puts a taxing on my electrical system. The 40 amp draw is noticeable and I can watch my volt gauge drop 1.5v whenever it kicks on. Why run the electric fan and watch temps cycle up and down when it looks like the viscous fan will hold the temp at a good steady temp?
:wack:
I do like the chin spoiler, and hopefully will be putting one on my car also. :cheers: