What is the fuel capacity difference between the John Deere 6R 110 and 6M 115?

The John Deere 6R 110 has a fuel capacity of 52.6 gal. and the John Deere 6M 115 has a fuel capacity of 46.2 gal., a difference of 6.4 gal. The John Deere 6R 110 has the higher fuel capacity.