2024 Powerstroke Transmission Flush

2024 Powerstroke Transmission Flush. To get all of the old fluid out of the transmission, you need to perform a system flush rather than a simple change. Replace the accessory drive belt or belts if not replaced within the last 100,000 mi (160,000 km).

I wrote a procedure published on this site about how to flush an automatic transmission. The transmission system holds almost 18 quarts of atf, and you must waste a couple of quarts to be sure you get it all purged and replaced, so buy 20 quarts of mercon or.