[hot_rod]

Thanks for the reply jcamaro, I followed your advice and recharged it.

and a little more to this...before posting here, I searched K&N web site, read the FAQ, and sent an email of essentially the same question to their tech support address.

They just answered me a few moments ago. What I find rather unusual is the footnote in the message.

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The statement above is intended solely for the person(s) to whom it is addressed and is not to be publicized, republished, forwarded, copied or repeated without expressed permission from K&N Engineering, and only when done so in its entirety.If you are not a named recipient, you are also on notice of its status. If you receive this message in error, please notify the sender immediately by reply e-mail and then delete this message from your system. You must not disclose it to any other person, copy or distribute it or use it for any purpose.
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Having lived in the "corporate world" make take on it is their leagal department told everyone they shall put this in all emails to the public.

So with that rather “strongly worded” notation, I will just ah… use my words and tell ya that it said to service it at 30K miles or when the dirt exceeds the wire mesh.