Owner's Manual
Page 241
..., your vehicle will operate satisfactorily on fuels meeting federal specifications, but your vehicle's acceleration may notice an audible knocking noise when you drive. If this occurs, use regular unleaded gasoline rated at 87 octane or higher and you may notice a heavy... knocking noise when you drive, commonly referred to your engine. If you are using gasoline rated at 87 octane or higher and you might damage your authorized Saturn retailer for additional information. Some gasolines may fail a smog-check ...
..., your vehicle will operate satisfactorily on fuels meeting federal specifications, but your vehicle's acceleration may notice an audible knocking noise when you drive. If this occurs, use regular unleaded gasoline rated at 87 octane or higher and you may notice a heavy... knocking noise when you drive, commonly referred to your engine. If you are using gasoline rated at 87 octane or higher and you might damage your authorized Saturn retailer for additional information. Some gasolines may fail a smog-check ...