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               Originally Posted by 
              Bartosz  
               i'm worrying that this could be sucked in to the engine and clogged up throttle body, or cause some other problems?
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         Unless your filter is totally blocked, it won't be sucked in.
         
        
 Grease is as good as any as it will also trap any dirt if you've a small hole in there. The trouble with silicon, if you need to remove the filter then you might not get a good seal next time. The cover you are using is quite flexible, the DNA one is very rigid.
         
         
        
 While you are at it - seal the side covers with grease too, they are far more likely to allow dirt into the airbox and cause damage (if you haven't already)