I never noticed any fuel gains but the power and noise seems a bit better then before. Had it now for at least 5 years and never a failure. It was my daily driver until 2 years ago. I installed 2 switches, 1 for on, 1 for off. It seems that in the real hot summer, the AC works much better when the condensor gets some cool air right away. I also installed a LED so I know when the fan runs and when it's switched off.

92 Xcab V6 4x4 SR5 5sp., Detroit locker rear, lim. slip front, Warn hubs, H4's, electr. fan, eng. oil cooler, 1 lift, open cat.