Chris,

To be honest, I couldn't tell you. They are MK tanks, I believe the main tank to be around 17oz, and the header tank to be close to five. With the CDI, I could get through Masters and burn through about 1/3 of the main tank, without the CDI, I am burning a little over 1/2. My glow setup uses 20% Coolpower heli, and an APC 19x11.

Happy new year to you as well, I hope you're doing well!