Electric VS standard fan

My Summit Elec Fan works really well, esp on Summer days. However, since I'm running anything from E30-E85, the fan doesn't need to kick on much - especially in the Winter. Ethanol tuning issues aside, the Elec Fan seemed to work OK w/ my old stock Alternator/Charging System. About a year ago, I replaced the stock charging w/ a late-1970s/80s 65 amp alternator + newer stye Volt Reg. I continue to have no issues w/ the draw of elec.

However, recently, my Fan Relay died. As such, the fan wanted to stay on all the time. I had a manual switch inside just in case of this, so I can control it manually. However, I'd just as soon not have to do that.