Can you tell me where you get this information from?
The normal practice is to flush the cooling systems on todays vehicles. Why? First off there’s no drain cock. Second, there is no radiator cap. So how do you service the cooling system correctly if there are none of the provisions to do so?
As a matter a fact, a flush machine doesn’t put a greater pressure on the cooling system than what it normally see’s under normal operation. And if a leak is discovered while the flushing process is taking a place, the leak already existed. The flush machine didn’t cause it.
I can’t tell you how many cooling systems I’ve flushed. And it’s never caused a problem on a sound cooling system.
Another example of misinformation!
Tester