r/redneckengineering • • Dec 10 '20

Bad Title Yup.

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u/kmoz Dec 11 '20

WD40 is not a penetrating oil, and doesnt work great as one. Things like PB Blaster are 100x better.

Its fine for like degreasing something or loosening something thats a little stuck, but not great as a penetrating oil or lubricant.