Wheel bearings are being packed with grease. technician a says to use grease that is labeled "g & quot for severe duty. technician b says to use grease with an nlgi number of 2. which technician is correct

TECHNICIAN 2 IS CORRECT.
Wheel bearing is typically used for guiding and supporting shafts and sometimes axles. Wheel bearing has its own special grease, which is specifically designed for high friction surfaces. Most bearing wheels in cars and trucks are typically lubricated with NLGI {National Lubricating Grease Institute] Number 2.  Effective lubrication is needed to ensure that a wheel bearing has a long life.