Questions

State, with reasons, THREE properties required of a crankcase oil which is to be used for a trunk piston main engine

Question

Explain how a representative sample of crankcase oil would be obtained from a trunk piston engine

Briefly describe the action to be taken if the crankcase oil cannot immediately be replaced and analysis shows:

i) Water is present

ii) Alkalinity has fallen

iii) Viscosity has changed appreciably

iv) Carbon content has increased.