MachDriver

The reason why we went to the higher fuel grade one it is better for the engine two it was a simple upgrade all they had to do was change the fuel mixture valve and three it was one advantage we had over the axis.The axis never really had High Octane gas most of the war the germans had 87 octane until Mid 44 when the C-3 Synthetic 100 Octane gas.And for the record the Mustang in game is the D-25na not the D-20na the D-25 was the only Mustang that had Zero Zero rocket pylons until after the war then the D-30's were carrying them and Grape Jam is right this type of mustang should have had 67hg in low blower setting and 75 hg in high blower setting at 12,000ft it is a 22 lb mustang.