Quote:
Originally Posted by rexcramer
Here is a topic I have never seen discussed. Has anybody used a 'flush chemical' prior to refilling? I am going to guess the OEM fluid group hasn't. What about the Prestone faithful? Prestone makes a 'flush and cleaner.' Back in the day when the earth was flat, I always used a flush on my cast iron blocks before replacing the anti-freeze.
Most threads/videos speak to flushing once or twice with distilled only.
|
I know that Mercedes has a citric acid flush. If the directions are followed exactly, it works well for breaking down gunk. Some forum posters claim it's not as strong as the Prestone flush, for what it's worth.