Strange substance underneath car?

[TypeRinATL]

What does this look like to you? I moved my car out to wash it and noticed this on the concrete floor.

I don’t know what this is. My first hunch was dried coolant, but it looks a lot like “efflorescence.”

Any ideas? Thanks!

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[Fk8 4343]

Salt

 

[nuowner]

I get that on my garage floor occasionally and can't make a direct relationship to a vehicle because it's not always near them.

 

[ez12a]

its ectoplasm.

jk. I'd just put the car on ramps or stands and see whats up.

 

[scoobysnack]

Salt

yep, aka solute. or coke?

 

[charleswrivers]

Mung?

I don't know. I've seen it under random cars. It's not Civic-specific.

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