FE diference with belt fan or electric
 

Hello, I own a Hyundai H1 van with a 2.5l turbo diesel, its rear wheel drive and has a belt driven fan, how much a diference in FE if I dissable the fan and put in an electric fan? The van is alright on fuel but I would like to improve, any advice is appreciated.

I may catch a bunch of crap for saying but I noticed no one has responded.

I have heard that the belt fans aren't really that much of a draw until they engage. I assume the clutch style that only comes on at a certain temp. if that is the case then you would be better off putting your efforts in other places. if it is a fan that is on automatically and the entire time the motor is running, then yes it should make a huge difference. (huge being relative)

there still is some gain even if you have the clutch style because you are spinning a mass even if it is just the hub that is not engaged and a belt there as well.