No because everything in GT is balanced very carefully around those values. I understand that the first reaction is often "increase the weak stuff instead of nerfing the strong stuff", but this is a case where there's only one tiny sore thumb in the middle of a massive pile of balance.I rather think that the fuel value of BC fuel and its equivalents in a GT Diesel Generator needs to be adjusted upwards, drastically. Actually, a factor of 3.5 appears almost appropriate given the differences between oil, ethanol and refined fuel in all other mods that use them. Buildcraft, Thermal Expansion and EnderIO are all consistent in that refined fuel is about three times as efficient as Ethanol/MFR Biofuel in their respective engines, and that one fuel bucket generates approximately the equivalent of 1.5million RF. It makes no sense that GT's combustion engine-equivalent is three times less efficient than the rest of modded Minecraft.
And the rest of modded minecraft can go fly a kite because its not in this pack. RF economy differs from pack to pack, as does balance, and it makes no sense here.
edit: I also meant to say that I agree that there needs to be a difference between ethanol and diesel. But the answer can't be "make our hardcore GT pack wussier than everyone else's"