verdict on engine flush addiditives

[dickdog1]

I always flushed my Toyota 89 pickup periodically with Gunk motor oil flush and berryman Chemtool. its coming up on 200,000 miles and running strong.
Then again, its a 22R and bulletproof.
What is the verdict on motor oil periodic flushes on newer vehicles. I know it should not be done on older high mileage and dirty engines or it will send bad junk into the upper cylander valves i think.

 

[Gary Allan]

Take a peak in "Oil Additives" down a bit on the forum content page. There's more than you want to know there.

 

[BarkerMan]

Gary Allan +1

 

[tackleberry625]

+ 2