Well to do folks buy these cars.-----Great under warranty.----Keep buying a new one.-----Not a good car used , for folks with limited income.-----And nobody markets a new / simple car or pick-up these days.
No need to do any flushing , just fill with the premium blend.-----The issue is with the forward spring and clutch.----Stop running it and initiate repairs.----Easy fix in my opinion.----I developed a method to repair this about 45 years ago.