Having never owned a vehicle that requires premium fuel before, how important is using premium in the Fiesta ST.
The brochure says that premium is recommended for ecoboost. The Ford sales guy told me that that using regular is fine for the engine, and you'll only lose out on about 7% of the boost power. Does anyone know if this is true or not? Will using regular fuel damage the engine over time?
Thanks
The brochure says that premium is recommended for ecoboost. The Ford sales guy told me that that using regular is fine for the engine, and you'll only lose out on about 7% of the boost power. Does anyone know if this is true or not? Will using regular fuel damage the engine over time?
Thanks