Sea Foam High Mileage in synthetic oil blend [SOLVED] Asked by CJ T. In Missouri Can Sea Foam High Mileage be added to oil if using a synthetic blend for a high mileage Santa Fe with 250k miles?
Yes, High Mileage can be used with a synthetic blend. It’s safe and effective in any oil blend, conventional or synthetic. Add it about 100-300 miles before your next oil change so the Sea Foam has time to re-liquify varnish and deposits (which will be drained away with the old oil).
Hope that helps!
Can I use Sea Foam High Mileage in my snowmobile?
Yes, Sea Foam High Mileage is safe in the fuel and oil of any gasoline engine. High Mileage is great in snowmobiles.