What is the fuel capacity difference between the John Deere 6R 180 and 6R 185?

The John Deere 6R 180 has a fuel capacity of 95.1 gal. and the John Deere 6R 185 has a fuel capacity of 74 gal., a difference of 21.1 gal. The John Deere 6R 180 has the higher fuel capacity.