same as motor oil, it gets recycled

 

It's 6 years after the in service date, not build date. There is no evidence that failures of the internal water pump in transverse 3.5's can be prevented by more frequent coolant changes. It's just a bad design.

 

I did this about a month ago due to TSB 19-2121 and triying to prevent the issues associated with it. I wanted to make sure I did a full flush to get the original coolant out. I followed a similar procedure as linked in the video below with one minor detail changed. I didn't flush with a hose, I used distilled water which is necessary with the yellow coolant as mentioned in the video linked above in post #5. I used about 10 gallons of distilled and there didn't seem to be any residiual orange coolant in there anymore. Be sure to check the concentration of the coolant when you're done. I didn't add enough concentrate into mine and the freeze point was really high. My truck is a '17 5.0 with 43k miles.

Link to TSB

https://static.nhtsa.gov/odi/tsbs/20...60863-0001.pdf

 

Thanks for all the info, much appreciated!

I will plan to replace it the same way you did with distilled and then measure the final drain to help determine what is needed for the 50/50 ratio. I'll double check it with a tester.
Was 2 gallons of concentrate enough for yours?

 

2 gallons was enough for me yes. The petcock it located on the driver side on the 2015-2017 5.0 and can be opened with a long flat head screwdriver. I rationed 2-3 gallons for the initial flush (before the cleaner was added), 5-6 gallons for the bigger flush (where the petcock remains open when the engine is hot after the cleaner was circulated through the engine), and 1-2 gallons for the final fill. If i were to do it again though, i'd probably start the final fill with 1 1/2 - 1 3/4 gallons of the concentrate and then fill the remainder with the distilled water. That would've probably gotten my concentration closer the first time.

 

Perfect, thanks again!

I'm not sure yet, but I may not use the flush, just distilled.

 

Skip to the 6 minutes 19 second mark in the video you linked to in post #5. It highly recommends using distilled.

 

Definitely going to use distilled, I already picked up plenty. I just may not use the chemical flush

 

Oh sorry I misunderstood. For lower mileage it may not be necessary as the system will probably not be that dirty. I thought it was cheap insurance when I did mine.

 

All good. I appreciate the input.
Also, I messaged Ford tech Brian last week. He replied today saying he wouldn't mess with the hoses