On 2 Oct 2019 23:14:09 GMT, F Russell wrote:

On Wed, 02 Oct 2019 19:10:42 -0400, Ed Pawlowski wrote:


Why does it have to be flushed? Most car makers just tell you to drain
and replace the fluid.


It's an older car: 1997 Ford Taurus.

"Speedy" lube places are fine for an oil change, but I need
to know about their coolant change process.
Reverse flushing removes any sediment and products of corrosion as
well as helping to neutralize the PH. If the lube shop is using a
reverse flush machine it will be the same as a dealer would use.
However, MANY garages are now using a recycler - which does the same
thing but filters and reconditions the original coolant, adjusting the
pH and replacing the additives as required. Done properly this is
every bit as good as replacement and does not involve producing
hazardous waste..