1.0 link Rainbow Dash Network http://rainbowdash.net/ m14brony http://rainbowdash.net/m14brony http://rainbowdash.net/notice/3761050 @<span class="vcard"><a href="http://rainbowdash.net/user/33377" class="url" title="Sarcastic Sexist Dumbass"><span class="fn nickname mention">saintnichawlas</span></a></span> I have heard varying intervals about cabin filters. For instance, I have often heard that they should be changed every 30,000 miles. At the same time, the carton of the filter I bought said every 15,000 miles. I have a K&amp;N engine intake filter, so I simply take that out, clean it, and retreat it with that red spray annually.