Can i use Standard sparkplugs in a flex fuel?

No, you generally shouldn't use standard spark plugs in a flex-fuel vehicle. Flex-fuel vehicles run on a blend of gasoline and ethanol, and ethanol is more corrosive. Standard spark plugs are not designed to withstand the increased corrosion caused by the higher ethanol content. Flex-fuel vehicles require spark plugs specifically designed for ethanol blends to prevent premature wear and failure. Using the wrong plugs can lead to misfires, reduced fuel efficiency, and engine damage. Always consult your owner's manual for the correct spark plug type and specifications for your vehicle.