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    Coolant in Synthetic Oil...Symptoms? GM 3400 motor

    Hi everyone, I also did post in the general oil forum. I have an 04 Aztek running Pennzoil synthetic. I had blackstone check my oil on the last change and they confirmed coolant in the oil. Anyone familiar with the 3400 engine knows of all the gasket issues with this engine. I've been to the...
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    Coolant in Pennzoil Synthetic Oil.. Symptoms??

    Hi everyone, I have an 04 Aztek running Pennzoil synthetic. I had blackstone check my oil on the last change and they confirmed coolant in the oil. I've been to the dealer twice regarding this issue and they are disputing that there is anything wrong and they do not see coolant in the oil. The...
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