Filling with nitrogen

Hi,

I am considering purchase of a nitrogen fill system. I don't have power
at my tiedown, and filling the tires with a 12 volt portable compressor
is a pain due to having to park the car near the tire, move to the
other side, etc. I figgured a nice nitrogen tank system would give me
a power free solution and fill the tire with the best possible kind
of gas.

I found a fill system online:

http://www.aircraftspruce.com/catalo...trogenTire.php

My only question is why it says "no struts". That would seem to me
to be one of the best uses of this system, that I can top off my
strut, which is forever going low (on a Cessna). Is there a reason
for this restriction, and is there a system that can do struts?

Thank you.

Scott Moore