Computers and Electronics What does synthetic oil stabilizer do? What does synthetic oil stabilizer do? Controls heat and wear in motorcycles, air-cooled engines and all drive train components. Reduces friction for increased power and MPG. In Ford Powerstrokes we suggest one quart of Pure Synthetic Oil Stabilizer per oil change. Where do you put oil stabilizer? https://www.youtube.com/watch?v=1mCPJ6OKjGw