The engine oil pressure data published in the 1982, 1983 and early editions of the 1984 Cavalier owner's manual was incorrect. The second printing of the 1984 Cavalier owner's manual will be revised to show 50 to 60 psi (ap- proximately 343 to 413 kPa) at road speeds of 35 to 40 mph.
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.