What will happen if you put transmission fluid in the oil?

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asked Feb 23, 2019 in Repairs/Maintenance by Tracavis (220 points)
What will happen if you put transmission fluid in the oil?

1 Answer

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answered Feb 23, 2019 by Larry S (42,350 points)
If you just added a little bit of transmission fluid to the engine oil then nothing should happen to the engine.

But if you poured a quart or more of transmission fluid into the engine oil then you need to drain the engine oil completely and refill it with engine oil.

The engine oil filter should also be changed if you've had the engine running.

Having too much transmission fluid in the engine oil can cause damage to the engine bearings and possibly blow out seals in the engine.

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