Engine 2014: General Subjects

1. A how many seconds was required for a cone to penetrate the sample
2. B the temperature at which a cone would begin to penetrate the sample
3. C the temperature at which the grease would become sufficiently fluid to fill the voids of a standard ball bearing
4. D the depth to which a cone would penetrate a sample of grease in 5 seconds

Tip: press A-D to answer