Is it necessary to do a coolant flush? 127,000 miles 2003 F150

 

Help

 

probably wouldnt hurt, its really simple you can do it hell a baby can do, all you have to to is pull the plug on the bottom of the radiator and let it all out, then run your garden hose through if for a few minites till all you see is water, put the plug back in and refill it, this will all cost of 30$ in coolant maybe more not sure and about a half hour of your time

 

That's not a flush, that's a halfass drain and refill.

If it's never been done, it's overdue. Go have it professionally done, it should cost you about 90 bucks. If you want to do it yourself, get a flushing tee kit.