Owner's Manual
Page 249
... engine (VIN Code K), use premium unleaded gasoline with a posted octane of your vehicle. 6-3 If the octane is less than 87, you may get a heavy knocking noise when you accelerate or drive uphill is bad enough, it . This does not indicate a problem exists or that identifies your engine. If it can... of 91 or higher for best performance. You will find the VIN at 87 octane or higher, but your vehicle's acceleration may get a heavy knocking noise when you drive. If your vehicle has the 5.7L V8 engine (VIN Code G), use regular unleaded gasoline with your dealer before you try ...
... engine (VIN Code K), use premium unleaded gasoline with a posted octane of your vehicle. 6-3 If the octane is less than 87, you may get a heavy knocking noise when you accelerate or drive uphill is bad enough, it . This does not indicate a problem exists or that identifies your engine. If it can... of 91 or higher for best performance. You will find the VIN at 87 octane or higher, but your vehicle's acceleration may get a heavy knocking noise when you drive. If your vehicle has the 5.7L V8 engine (VIN Code G), use regular unleaded gasoline with your dealer before you try ...