Your response makes things more confusing.

On the attachment:

328-00001 is listed as Matthew's Water coolcheck. 3 test strip for hardness, chloride, and PH.

328-00008 is listed as the Antifreeze coolant ELC contamination kit. Tests coolant strength and corrosion inhibitor strength.

In the diesel supplement, the only difference is 328-00001 is listed as 328-00007.

Additionally, a quick search on google shows that 328-00001 is what is used with the coolant in the 6.0 and 6.4. So, which is correct?

I am not seeing that. I see 328-00001 listed as "Rotunda Test Strip", which is correct. 328-00001 tests for nitrite, molybdate and glycol concentration.

This is correct as far as the kit and part number. However, the kit test for RA (reserve alkalinity) and corrosion inhibitor strength as the document posted by Paul says.

No, 328-00007 is Matthew's Water CoolCheck. 328-00001 which is the more relevant test for routine maintenance appears to be forgotten about in the supplement.

328-00001 test strips are used on the 6.0L, 6.4L and 6.7L. The difference being the results you expect/want to see.



A quick summary on the how to and where to get was recently done by lexustbs. It can be found at the following link...

https://www.ford-trucks.com/forums/1...l#post10302454

What happened to the good old days when all we worried about was there was enough "water" in the radiator? :)

Thanks PS HD. What I was quoting was from the Ford Diesel Supplement. I also recall from this forum a bunch of guys getting the test strip test done, but then found out the dealer used the wrong strips because the new truck use OAT type antifreeze where the 6.0 and 6.4 did not.

Got mine tested yesterday. The service manager wasn't sure if the test kit had arrived and so checked with the diesel tech about it. It had arrived, so the diesel tech opened it up and used it on my truck. I was told that a few others had come in with the check coolant additive reminder but the kit had not been available, so I was the first one tested at my dealership. He checked the main loop and was getting ready to close things up when I asked about the secondary loop. He then checked that one too. He told me both checked good. He reset the warning light for me, with the manager looking over his shoulder.

He also told me he had not worked on any 6.7s so far. No problems reported to his knowledge. He was of the opinion that the engineers had done a good job designing and building this truck.

Check Coolant Additive
 

My truck is saying to do this. Once checked, how do you reset the warning light? At the dealer?

Thanks

Nope, you should be able to go in under settings to reset the warning yourself.

I'm pretty sure you just long press ok to reset that message.