5 - Estimating Lubricating Oil Cost
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Practice Questions
Test your understanding with targeted questions
What is the typical interval for lubricating oil changes?
💡 Hint: Think about how frequently maintenance tasks are done.
Why might lubricating oil need to be changed more frequently?
💡 Hint: Consider the impact of the work environment.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the recommended interval for lubricating oil changes under normal conditions?
💡 Hint: Think about when typical maintenance is performed.
True or False: The crankcase capacity affects the total quantity of lubricating oil consumed.
💡 Hint: Consider how larger engines utilize oil.
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Challenge Problems
Push your limits with advanced challenges
A construction site requires a hydraulic excavator operating at 400 hp with an oil change interval of 75 hours due to dusty conditions. If the consumption factor from the manual is 0.008 gallons/hp/hour, estimate total oil usage in gallons over 150 hours.
💡 Hint: Remember to factor in the conditions given.
If a company uses a 250 hp engine with a crankcase capacity of 12 gallons and runs it under moderate conditions with a consumption factor of 0.004 gallons/hp/hour, how often should they change the oil to prevent degradation?
💡 Hint: Think about the recommended intervals discussed earlier.
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