2010 BUICK ENCLAVE octane

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Page 282 of 438

BUICK ENCLAVE 2010  Owners Manual 9-40 Driving and Operating
Recommended Fuel
Use regular unleaded gasoline with
a posted octane rating of 87 or
higher. If the octane rating is less
than 87, an audible knocking noise,
commonly referre

Page 284 of 438

BUICK ENCLAVE 2010  Owners Manual 9-42 Driving and Operating
Some gasolines that are
not reformulated for low
emissions can contain an
octane-enhancing additive called
methylcyclopentadienyl manganese
tricarbonyl (MMT); ask the attend