Re: 6 blade fan
As mentioned in the posts, having a clean radiator and engine block, engine pans and a 2 bladed fan should provide all that is needed to safely run your engine at elevated temperatures. Adding more fan blades will slightly consume some additional power from the 40 horses under the hood. This additional work decreases the cooling efficiency of the engine. Cruising over 35mph provides better cooling than that produced by the fan blades. It would be nice if the blades could be disconnected or declutched similar to a GM fan.
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