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Oil coming out of the turbo in a 4M40 engine can indicate several issues, such as worn turbo seals, excessive crankcase pressure, or oil blow-by. When the turbo's seals fail, oil can leak into the intake or exhaust side, leading to visible oil discharge. Additionally, if the engine is experiencing high pressure in the crankcase, it can force oil past the seals and into the turbo. Regular maintenance and monitoring of oil levels can help prevent such issues.

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2w ago

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