Just wanted to get some perspectives on Engine Oil Flush machines. Has anyone had this done when getting their car serviced? Has it caused any problems?

When I inquired about oil flushes with my mechanic. He said this is what he uses now, when it comes to engine oil flush.





I've used the typical engine oil flush in the past, where you pour it in with old engine oil, start the car and let it idle for 15 mins with the flush additive. Haven't had problems with this so far.