Given Scenario : 1. Customer complaints that his vehicle (1985 model) consuming engine oil where he needs to top up the

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Given Scenario :
1. Customer complaints that his vehicle (1985 model) consuming
engine oil where he needs to top up the engine oil before reaching
the next schedule engine oil replacement.
2. The engine also producing "blue smoke" as it running and
getting worst during acceleration.
Question :
a) Identify the cause of the above problem and explain how the
identified cause leads to the above problem.
b) Explain the engine oil code/specification as stated SAE
10w40.