We have a 2013 Ford Flex SEL with 76,000 miles. I am using Sea Foam regularly in the fuel and crankcase, and the car runs smooth and quiet with almost no vibration coming from the engine. You can barely even hear the engine from inside the cabin. Do I really need to switch to the Sea Foam High Mileage version or just continue using the regular Sea Foam to prevent engine problems?
That’s a great question, Gary. You’ll be fine either way. Both products are similar and work the same in fuel and oil. For what it’s worth, High Mileage is a bit tougher on stubborn residues and deposits. Thanks for using Sea Foam!