Re: Core Plugs (Freeze Plugs)

Posted by Mr.Pushbutton  On 2007/6/16 19:15:50

Go to any Cadillac dealer and ask the nice man behind the parts counter for "cooling system treatment tablets" These are the miracle pill of the 80s still in use today.
They are really just ground ginger root, compressed into a horse pill. GM reluctantly began offering these in the early 80s after introducing their HT-4100 "wet sleeve" V-8, the predecessor of the Norstar and such. They were faced with catastrophic returns for coolant going everywhere it shouldn't, were trying all kinds of sealing compounds from Dow (which required complete disassembly to install) and were losing the battle when an experienced dyno mechanic, an old school wrench told the young engineers to "put some ginger root in it"--they laughed, kept on trying the next technological miracle, dealer reports kept multiplying. The mechanic went and got some ginger root, ground it up, put it in a test car (one of the many that were piling up daily) and VIOLA! the problem went away. The green engineers couldn't believe their eyes, tested the S__t out of that car and it held. The next week GM was the no.1 consumer of ginger root, cranking out horse pills to ship to the dealers. They put two in each engine, one per side at the Livonia engine plant.
I put one in each cooling bank of every engine I rebuild, and no problems. If you have a freeze plug leak after rebuilding it will stop (permanently) after about 15 minutes of running at temp.

I guarantee you it will be the best $6 you will ever spend.
One week after you start using the pills you can open the radiator and see no evidence of them ever having been there, no coating the rad core, robbing efficiency.


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