Correct answer
At the engine-oil filling point identified in the manual.
At the engine-oil filling point identified by the manufacturer, usually accessible at the top of the engine. Exact position depends on the model; consult the manual and do not confuse it with coolant, the air filter or the sump drain plug. Topping up does not require opening the drain plug. Follow the vehicle’s procedure, oil specification and maximum level with the engine stopped and at the prescribed temperature.
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At the engine-oil filling point identified in the manual.
At the coolant cap because both fluids use the same reservoir.
At the air filter which always serves to top up engine oil.
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