Conventional wisdom credits WD-40 with thousands of uses as a penetrating oil and lubricant. But is that really the case? We put the red-capped classic to the test in five common tasks to see how it held up against other lubes—and now think twice about our WD-40 overuse.
They found WD40 to be a good all-around lube, but it was soundly beaten in specific tasks.
DUMMR.com 
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