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wbergtho |
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Senior Member ![]() ![]() ![]() Group: Members Posts: 1,314 Joined: 28-April 03 From: Roberts, WI Member No.: 623 ![]() |
I have a V-8 converted car...and I thought I'd ask if anyone has any experience with additives or "suppliments" that you might put into the coolant of a water cooled car? I have a modern LS series GM motor in my 914 and the GM factory recommends the Dexcool orange/red coolant in these motors. I have heard a few nightmare stories about Dexcool and have known that the "old school" green Prestone coolant works just fine in an all aluminum motor. My question is specifically this: If I run the old school Prestone, do I need any further additives to minimize the possibility of corrosion or other pitfalls? Any comments and/or experience with different coolants and aluminum motors would be quite helpful. I need a better education on this matter.
Regards, Bill |
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SLITS |
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"This Utah shit is HARSH!" ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None ![]() ![]() |
Of the "old school" ethylene glycol mixtures, PEAK (formulated by Northern Chemical) was supposedly the best. To the ethylene glycol base, sodium metaborate (ph stabilizer scale control/corrosion inhibitor), wetting agents (make water wetter/keep contaminants in solution), sodium nitrite (corrosion inhibitor), sodium silicate (corrosion inhibitor), and dispersants amongst other things are added. I can see no need for additional "additives".
It should be changed every two years as the heat cycles will eventually break the ethylene glycol into two organic acids. Corrosion proceeds unchecked after that point. Anyway .......... that's what I was taught |
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