What is the fuel capacity difference between the John Deere 6R 220 and 6M 230?

The John Deere 6R 220 has a fuel capacity of 95.1 gal. and the John Deere 6M 230 has a fuel capacity of 108.3 gal., a difference of 13.2 gal. The John Deere 6M 230 has the higher fuel capacity.