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Old 01-30-2012, 06:32 PM
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Question 7.3L block cavitation

Do we as 99-03' PowerStroke owners need to be concerned with block cavitation from the lack of the additive in antifreeze, or is this only for older 7.3L's such as the IDI's, etc?
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Old 01-30-2012, 07:45 PM
GAS GAS is offline
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Yes we do.
for more information search for coolant flush, there is lots of it on the site.
This is from a Cummins motor if I remember correctly.
Another view in a following post.

Last edited by GAS; 01-31-2012 at 11:28 AM.
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Old 01-30-2012, 11:43 PM
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from my understanding it's all diesels that have to worry about it.
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Old 01-31-2012, 12:14 AM
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How long before it causes issues??
I guess there would be multiple factors deciding that though. :/
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Old 01-31-2012, 12:21 AM
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Ya I think it's more of how it was taken care off. That's why elc is a good choice to help prevent caviatation
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Old 01-31-2012, 08:15 AM
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OK. Can someone help on where to get started? Do I need to start by testing the radiator fluid with a test strip and see if the fluid needs to be changed? And if it's good, then just put some additive in there? Or do I need to perform a few system flushes?

I bought my truck with 189,000 and I now have almost 220,000 miles on it and I have NO idea about the service history of the coolant.


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Old 01-31-2012, 08:55 AM
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You just sca's up in the coolant. You can test with strips and if you put a coolant bypass filter on it they contain sca cakes in the filter to keep the coolant happy.
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Old 01-31-2012, 09:05 AM
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Question

"sca's" ???

special coolant additive?



So I know I haven't changed the coolant in almost 30,000 miles. It may have actually been more. Does the coolant need to be changed regardless?

Someone tell me what I need to do. Just buy a good 50/50 blend and add the ELC? Or do they already sell a good premix of coolant that already has the ELC? Would this be the CAT brand?
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Old 01-31-2012, 09:30 AM
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If you flush the system out to and EC-1 (extended life) rated coolant you don't have to check SCA levels. I went with Catapillar brand EL.
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Old 01-31-2012, 09:54 AM
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is it true you can't run red elc in an early 99?
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