Personally I wouldn't run flood coolants in a shop at the house . When the coolant goes rancid , that **** stinks like a crab shell filled dumpster . I don't miss that smell one bit ! For aluminum , the WD-40 is simple , brush it or spray it . I hate misters at home also . Oil or tap magic for steel and WD-40 for alum .
Watch anything that will flash , especially if you smoke !
My coolant mix I use in the mister is over 2 years old. The way I keep it fresh is two things a sealed container and some household cleaner to keep the bacteria down
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