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Discussion Starter #1
I had the water pump on my 4100ht replaced, it was fine for 5 or 6 months and now the shit's leaking again, but it's leaking from the top cause after i turn off the car and check under the hood i can see and smell coolant from the top of the block, why is this and is the 4.1 coolant additive that GM recommends really needed in this type of engine, any advice woul be appreciated thanks.
 

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you have to run the red antifreeze in newer GM,s or else the seals in the coolent system will deteriorate, which is proabably what happened in your case, i'm suprised it made it 6 months
 

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Discussion Starter #3
it's an 83 caddy!!
 

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somebody probably just did a bad job on it.

I put one my 84 fleet & it was a cheap autozone one & had no problems with it.

I used the additive pellets in mine but I think that is for anti corrosion purposes. It shouldn't have effected your seal.
 
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