Coolant testing procedure help

[Scott & Heather]

Arg. Still running hot.
Going to have to pull the radiators and inspect and if they are clean, water pump is next.


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[eagle19952]

Arg. Still running hot.
Going to have to pull the radiators and inspect and if they are clean, water pump is next.


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might as well tank the radiators...

[luvrbus]

    What is the change interval for the antifreeze change, please?   Thanks,  BH

All depends on the brand and how it is monitored anywhere from 1 to 7 years DD wants it changed every 2 years regardless,Cummins wants the antifreeze tested once a year and replace when the the test is - which is about every 2 to 3 years     

[Scott & Heather]

Ok, so if indeed I need to clean out these rads, what's the best method? Pull them, fill will vinegar, let sit for a day, then rinse?


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[buswarrior]

Detroit used to have a 2 part cleaner.

You used the acid mixture first, then the neutralizer to rinse, you drain all of it into a drum, and at the end it is all neutralized mixed together.

Each powder comes in a gallon plastic jug. Use hot water to mix the powder, dissolves better.

And, HUGE PPE warning! Mono goggles please, you don't want this stuff splashed into your eyes!!!

happy coaching!
buswarrior

[Scott & Heather]

Thanks! Now to find this stuff...


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[chessie4905]

Be careful if you have marginal radiators.

Here's one:    https://www.cumminsfiltration.com/south-pacific/cooling-system-cleaners

[Scott & Heather]

Thanks for that link! I'll be getting some of this stuff. The radiators are in really really good shape from the outside. I had bad radiators on my old MCI 9 and replaced them with new ones so I know the visual differences. The inside may be a different story.


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