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2004 to 2008 F-150 and Mark-LT 4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs. |
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Hi Bigterp, my truck is almost the same as yours. I just installed a flexalite monster fan. It does work very well and I have no doubt it has freed up some hp but im not seeing the fuel economy gains I had expected. There is a slight improvement but not nearly as much as other posts I have read indicate.
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