Owner's Manual
Page 312
... the emission control system may contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT); General Motors recommends against the use fuel containing methanol. However, E85 (85% ethanol) and other fuel not recommended in vehicles that were not designed for those fuels. Fuels containing MMT can corrode metal parts in the...
... the emission control system may contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT); General Motors recommends against the use fuel containing methanol. However, E85 (85% ethanol) and other fuel not recommended in vehicles that were not designed for those fuels. Fuels containing MMT can corrode metal parts in the...