There is an air pump that plugs into the lighter that has a can of fix-a-flat in-line. You can disconnect the line from the fix-a-flat and just pump air if you want.
I can't find the picture, but here is a post of what not to do:
http://www.300cforums.com/forums/srt...t=tire+sealant
I'll see if I can find a pic, if not I'll snap one and post it.
I am working on a space saver spare tire/wheel, but we are using an odd bolt pattern, so no luck yet.