thats not really true.
a study made by university of California, Berkely found that a corn based ethanol produces 10-15% less emmission and 1/3 worae interms of milage. Because of its poor energy density.
However, Boost 98 is a cellulosic based (sugarcane) which is much better than a starch based ethanol. Ethanol based from cellulosic performs much better in terms of economics. Thats why corn based which is starch based ethanol never really took of outside the cornbelt.
All bio fuels (ethanol and diesel) are naturallu corrosive. In small emount present in the fuel (E10) actually cleans the engine, fuel ines and injectors without having to add any additives into the fuel which translate into a cost saving. Sa,e thing with bio diesel. Its also been known when using 100% biodiesel or a high %tage of biodiesel it was reocmmended to change the fuel filter after the first tank use of the bio duesel. why? Cos all the shit from lines being cleaned out.
How much is Bp 98 and Mobil 8000 at the pump right now? And how much is Boost 98? From memory the cost difference is about A$6/tank comparing a normall 98 and with boost 98? And how much milage differences when using the normall gasoliine and boost 98? I have personally done the comparison myself by filling mobil and boost 98. But think of the less carbon emmision though and the difference in costs.
Benno from racepace who tunes my car says that go for the Boost 98 after the tune. It doesnt really makes a difference. But he says dont use shell and especially the optimax extreme which is a ripp off.
thats just my 2c worth.