If liquid is not compressible, why do we need special hydraulic fluid? Why not just use water?
In: Engineering
On top of everything else people are listing, the simplest reason is water freezes at 32°F. That’ll break cylinders and hoses and what not. It also boils at 212°F which isn’t that hot in the context of heavy equipment.
It’s similar to how you can use just water for coolant in your engine, but you probably shouldn’t because the results can be disastrous if there’s a cold snap.
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