Owner's Manual
Page 282
... octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT); General Motors recommends that you buy gasoline whether the fuel contains MMT. Fuels in Foreign Countries If you will help keep fuel injectors and intake valves clean. Never use fuel containing methanol. Environmental Protection Agency regulations. Additives To provide cleaner air, all gasolines in the United States...
... octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT); General Motors recommends that you buy gasoline whether the fuel contains MMT. Fuels in Foreign Countries If you will help keep fuel injectors and intake valves clean. Never use fuel containing methanol. Environmental Protection Agency regulations. Additives To provide cleaner air, all gasolines in the United States...