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I ran one with no prefilter for about 40k and the restriction gauge I installed in the end of it hardly moved. It was pretty grey looking but didnt have a problem. If there was a way to test it, I bet that filter would last 70k+ miles. the surface area is absolutely huge.!
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.