When I was at training, the instructor said that during testing, they ran a 6.7 on the bench with dexcool in it. The waterpump failed at 300 hours. The dealership should carry the strips (if the parts dept has been keeping up with their testing)

Well said:-X22

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I've posted the general test procedures for 6.7L coolant testing here... https://www.ford-trucks.com/forums/p...ictureid=48451

My apologies for the scale but the site forced me to rescale the image. If someone could advise how to post a .PDF here, it would make things a bit easier.

These newer OAT coolants provide significant benefits vs. the traditional glycol based derivatives. Cooling performance requirements continue to scale upward with higher engine horsepower and torque ratings along with decreases in NOx & CO2 emissions compliance requirements.

Heat exchanger technology for things like tube material, changes in base metals, gauge thickness, high efficient heat transfer methods and some of the more obscure influences such as the heat exchanger core solder flux that's used during the manufacturing process all have an impact on coolant life. Using the incorrect coolant type can cause nasty things to happen like gel formation.

For the 6.7L, under most typical customer usage profiles (duty cycle) there's minimal risk that the coolant will breakdown prematurely. Severe operation under the most extreme conditions (max trailer weight, etc.) will over time erode some of the coolants protective properties. During our internal reviews it was deemed important enough to add to the message center as a friendly reminder to monitor coolant condition at the given mileage intervals.

-Paul




Disclaimer: I work at Ford, but this is my own opinion and is not the opinion of Ford Motor Company.

Great info, Paul! Thanks for posting!

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you need to be a paid supporter to post inline attachments, which includes PDF files.
If you send it to me, my FTE userid @gmail.com, I will post it here for you.

Sam

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Yes, that's the section.

-Paul

powerstroke, I read the description on the complete antifreeze and it didn't say anything about carboxylates. I'm a little leary about ordering from accustrip because I talked to them not to long age about testing the ford coolant . They assured me that I was buying the right strips for the orange coolant and they were not. Did I miss something on the accustrip website?

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English please, which kit would I need?

My "check coolant additive" message appeared the other day with 13,140 miles on the engine. Manual states a 15K interval for testing, so, does the coolant system check programming work similar to the oil life meter? Does the PCM track duty cycle based on use and alter the check/change intervals?

Coolant checks used to be strictly based on mileage. Having said that, based on your mileage, I'm going to need to talk to the cluster guys to ask if they also included "hours" of operation in that calculation. I know we had developed a formula for converting hours of engine operation into a mileage factor.

-Paul

I neglected to post the mileage when my message came up. I was under 13000 miles. It will be interesting to see what Paul comes up with on this matter. I am still unsure why the owners should bear the cost of this testing, especially at 13000 miles. If anyone is interested, I would split the cost of the kits for the testing. Even the dealer is complaining about the cost.

Regards