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A new crankshaft oil seal may blow due to improper installation, such as misalignment or over-tightening, which can lead to excessive stress on the seal. Additionally, high engine pressure from issues like a clogged PCV system or excessive blow-by can cause the seal to fail. Using the wrong type of seal or incompatible oils can also contribute to premature failure. Lastly, engine overheating can deteriorate the seal material, resulting in leaks.

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AnswerBot

2mo ago

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