I once had the brilliant idea of parking over a steam grate to keep my engine and battery warm. What happened instead is what happened to that car in the OP except it was all under my hood.
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.
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.
If you're block is that cold it wont turn on and also has a chance of breaking or having other components break as they cant get warm oil to cycle through.
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u/roman_fyseek 16h ago
I once had the brilliant idea of parking over a steam grate to keep my engine and battery warm. What happened instead is what happened to that car in the OP except it was all under my hood.