I assume there is a tool to create pressure in the system beyond just running engine up to temperature? The moisture is pretty minimal. It's basically condensation on the trunk lid where it's moist to the touch.
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“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
On second thought. I think the one that I borrowed came from advance auto. Either place is likely to have it available to borrow for free. (Refundable deposit required)