I use R- 1 3 4 a Synthetic AC fluid, I got it from Autozone $26.00
come with gauge too, make sure to point arrow on the gauge to the outside temperature before you start.
http://www.batterymart.com/p-12v-mazda-miata-battery.html this should help
The 2014 Mazda MX-5-Miata has double overhead cam (DOHC).
The 2008 Mazda MX-5-Miata has double overhead cam (DOHC).
The 2005 Mazda MX-5-Miata has double overhead cam (DOHC).
The 2010 Mazda MX-5-Miata has double overhead cam (DOHC).
The 2004 Mazda MX-5-Miata has double overhead cam (DOHC).
The 2006 Mazda MX-5-Miata has double overhead cam (DOHC).
The 2013 Mazda MX-5-Miata has double overhead cam (DOHC).
The 2007 Mazda MX-5-Miata has double overhead cam (DOHC).
The 2011 Mazda MX-5-Miata has double overhead cam (DOHC).
The 2001 Mazda MX-5-Miata has double overhead cam (DOHC).
The 2003 Mazda MX-5-Miata has double overhead cam (DOHC).