For something as crucial as the cooling system, I don't think I would trust a $30 fan, that doesn't appear to very efficient, to keep my coolant temps down in the hot summer. A nice "high performance" spal fan can be had for less than $100 new, is $70 really that much money when it comes to critical components to your engine (not blowing up in your face, leaving hot boiling liquid that smells like melted mike & ikes, when you open the hood after you over heated your car because your $30 piece of crap fan decided its super cool reverse switch technology wasn't uber cool anymore and refuses to go on as a total square), I don't think so, haha.