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Go Back   Dodge Cummins Diesel Forum > 1st Gen. Dodge Cummins 89-93 12V Forums > 89-93 Powertrain
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Old 12-21-2013, 11:15 AM   #1 (permalink)
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Radiator coolant

So I've gotten mixed reviews on running coolant/water. Vs SCA can anyone give me a good answer on what to run and how much of each. Thank you in advance!
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Old 12-22-2013, 12:30 AM   #2 (permalink)
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SCA? What is that?

FWIW I use a 50/50 mix of prestone original in all my vehicles and have no cooling problems even with mainly 30 yr old parts.
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Old 12-22-2013, 12:57 AM   #3 (permalink)
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Just regular coolant. I have same results as Rude. Now if I were running an engine with cylinder liners I would keep track of the SCA.
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Old 12-22-2013, 01:25 AM   #4 (permalink)
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Ive never heard of SCA either
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Old 12-22-2013, 08:25 AM   #5 (permalink)
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SCA is a formula made especially for heavy duty diesels such as tractor trailers construction etc. But now alot of guys are running it in there trucks
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Old 12-22-2013, 10:03 AM   #6 (permalink)
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There is an additive to stop electrolysis so it does't corrode freeze plugs ect. rapidly.
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Old 12-22-2013, 10:11 AM   #7 (permalink)
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Quote:
Originally Posted by Fritzcat View Post
There is an additive to stop electrolysis so it does't corrode freeze plugs ect. rapidly.
Its purpose is to limit or stop wet liner pitting, which the ISB does not have.
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Old 12-22-2013, 12:24 PM   #8 (permalink)
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Would SCA be like Nalcool or something?
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Old 12-22-2013, 12:40 PM   #9 (permalink)
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Come on guys. I like answering questions, but you're in front of a computer with access to the same internet as I. Search SCA (supplemental coolant additive). Use google, don't expect this forum to have all answers.

I looked up Nalcool. Yes it apears to be an SCA. It is not needed in the Cummins ISB. Plain green antifreeze has done me right for over 200k miles. Change it at the correct intervals and do something else with your spare time.

NALCOOL Product Line from Nalco

More SCA is not better either.

What is SCA and how it affects an engine?s life? - Parts & Power Ltd
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