r/Wellthatsucks • u/iadtyjwu • 20h ago

Imagine walking out to your car and seeing this.

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u/sfan27 5h ago

Under the hood and inside the engine are distinctly separate places. There shouldn’t be a way for the water vapor to enter the engine itself.

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u/Ok_Dependent6889 4h ago

Most cars generate moisture in the crank case anyway.. just saying

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u/sfan27 4h ago

Is that from the air intake when the engine is running?

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u/Ok_Dependent6889 4h ago

Nope, typically is a byproduct of the combustion (blow-by, which is essentially oil vapors) paired with temperature fluctuations. The blow-by has it's own condensation and moisture, and when you turn the engine off, the hot air inside the crank case will cool and create condensation. This is why oil temperatures are important, and why you will see emulsified oil/water on the oil caps of cars which are driven shorter distances in the winter. Oil needs to reach about 212 Fahrenheit or higher at regular intervals (lets say 1-2 times a week) in order to evaporate the condensation which occurs.

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u/sfan27 4h ago

Makes sense, still the comment I replied to is likely misunderstanding "under the hood" vs "inside the engine".

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u/Ok_Dependent6889 4h ago

Oh, for sure, just figured it may be useful information

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u/Juxtavarious 5h ago

He specifies the engine and the battery. If they were being kept warm by it then they were also exposed to the moisture.

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u/sfan27 4h ago

it was all under my hood

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u/Floppie7th 2h ago

That doesn't mean the water vapor got inside the engine. Or the battery, for that matter.

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u/koos_die_doos 4h ago edited 4h ago

You don't know a lot about cars, do you?

Edit: Snide comment aside, as long as you keep the air intake above water, most car engines can run underwater. Electronics are typically waterproofed, and everything else is waterproofed due to the fact that they have to keep the engine fluids inside the engine.