The compressor comes with a selector switch allows you to use just the air or air and fix a flat combined. I have had to use compressor (air only) once to get me to the local tire shop. If you can avoid using the fix a flat crap please do so. That stuff will screw up the TPMS sensors inside your wheels. I personally carry a set of tire plugs (Auto Zone 10 bucks) just in case i really need to plug the hole.
2013 5.0, 6 speed manual, Brembo Pckg, 3.73 gears, American Thunder 40 series Flowmasters, 1 inch Lowering springs from Roush, J&M LCA, J&M Adj.Panhard bar, 20% Tint all around.