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Automotive Topics
Motor Oil Myths

Brakes
Coolant
Exhaust
Electrical
Engine
Fuel
Power Train
Steering
Chassis

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Motor Oil Myths

Dark oil means it's time to change it.: Not necessarily. Dark oil means that the oil is using the detergents added to the formulation to clean the inside of the engine. If an oil is dark, that doesn't mean that the additives are not working, it just means that the oil is doing its job to clean internally.