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In 2011 Ford Fiesta, it’s essential to use 5w-20 oil and fill it with 4.2 quarts. Quality oil is crucial for a smooth-running engine. Using bad oil could lead to engine problems, including a burning smell and potential engine failure. If you hear a knocking noise or notice reduced gas mileage, it's time to replace the oil. A good practice is to change the oil every 5,000 to 10,000 miles to avoid engine troubles.
I have a Ford Fiesta and the manual recommends using SAE 5W-30 oil. It would be a good idea to verify this information.
The recommended oil for the 2011 Ford Fiesta is the SAE 5W-20 with the API Certification Seal. The engine of the 2011 Ford Fiesta should be filled with 4.2 quarts (4 liters) of oil.
M5-20 can be rephrased as "a model number of 5-20".
I'm currently here after having my car serviced at a shop yesterday. The dealership had put 5w20 oil in it, but the shop used 5w30 instead. I'm unsure about the situation and I'm looking for more information here.