General Studies · IC Engines
What is the main purpose of a thermostat in a water-cooled engine?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1To regulate engine RPM
- 2To maintain optimum operating temperature✓
- 3To improve oil viscosity
- 4To improve fuel mileage
Correct answer
To maintain optimum operating temperature
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