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Guest Message by DevFuse

Get you C-MAX Hybrid Registered in the official Ford Authorized Registry. More here.


How to replace C-MAX engine air filter?

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20 replies to this topic

#21 OFFLINE   ptjones


    C-Max Hybrid Member

  • C-MAX Hybrid Platinum Member
  • 3,690 posts
  • Region:U.S. Southern Atlantic
  • LocationNewnan, GA
  • My C-MAX's Year:2013
  • Current Vehicle:2013 C-MAX SEL

Posted 03 September 2017 - 07:17 PM


The K&N belongs in a race car, where the goal is optimizing full throttle operation, and pressure drop is important. The C-Max isn't a race car, rarely runs unthrottled, and is designed to minimize fuel consumption. Doesn't sound like a good fit, does it? 


Since you've had that K&N in there a while, the proof should be in your oil. What's your oil's Si level after 10K miles of low-efficiency air filtration? Mine's been dropping and klatoo's Si levels are similar to mine (when normalized for oil mileage) so there's the beginnings of a basis for comparison.


Have fun,


I forgot about this thread, but it's worth mentioning I have at least 60k mi. ICE miles on my K&N Air Filter and I got my best Oil Analyses Report yet. :)  Not sure that it improved MPG's, but It seemed to me it improve acceleration. :)  I guess I could put my New Ford filter in( what a job :sad: ) And see if I notice a difference.



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