This was actually yesterday.
I changed the plugs and air filter in the Xterra. Plugs are OEM and have been in there for 108,000 miles. I also fianaly swapped the '96 over to amsoil XL. No less than i drive it now i can't justify getting the AZO. I did however useing the AZO in the Xterra, been in there since 8-11-11 and already had 3000 miles on it.