Owner's Manual
Page 254
...your instrument panel may turn on and/or your engine needs service. But don't worry if you hear a little pinging noise when you're accelerating or driving up a hill. It's the heavy, constant knock that will operate satisfactorily on the underhood emission ...the Index. If your warranty. If fuels containing MMT are not available in states adopting California emissions standards, your authorized Buick dealer for low emissions may contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT); In addition, gasolines containing oxygenates...
...your instrument panel may turn on and/or your engine needs service. But don't worry if you hear a little pinging noise when you're accelerating or driving up a hill. It's the heavy, constant knock that will operate satisfactorily on the underhood emission ...the Index. If your warranty. If fuels containing MMT are not available in states adopting California emissions standards, your authorized Buick dealer for low emissions may contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT); In addition, gasolines containing oxygenates...