Cooler Fan

[66Sprinter]

I just installed my new 6 blade Imperial Flex fan. Its 16 7/8 dia and I used a 1.5" spacer to clear the double pulley. The results were immediate. The temp gage doesnt even get to the middle like it did before. I drove about 30 mins in 1st while crusing the local park..and the temp did not rise a bit. I suspect that maybe I am 10-20 degrees cooler. I hope the new 3 row does the rest. (Fan from Advance Auto for $26...spacer $9)