What is the fuel capacity difference between the John Deere 6M 145 and 6M 155?

The John Deere 6M 145 has a fuel capacity of 28.53 gal. and the John Deere 6M 155 has a fuel capacity of 43.7 gal., a difference of 15.17 gal. The John Deere 6M 155 has the higher fuel capacity.