Part No. 1948791 bearing lubricant has been used for many years in all types of Delcotron Generators, Motor-Generators, and D.C. Generators.
The color of the lubricant is being changed from tan with a green cast, to a lubricant that is pink in color. The two are completely compatible, and can be mixed together in the same bearing.
The new pink lubricant retains the same qualities as the old tan lubricant, and will continue to be packaged under Part No. 1948791.
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.