And then there’s the third variant: Eni i-Sint Tech F 5W-30 (blue label). This type of oil was specifically developed for some Ford vehicles, including the Ford Fiesta in our example. As you can see, this engine oil meets the Ford WSS-M2C913-D specification (prescribed in the year 2020). Neither of the other 5W-30 variants, Eni i-Sint FE 5W-30 and Eni i-Sint MS 5W-30, are suitable for use in our example Ford.