Kroil Clear Food Grade Penetrating Oil (Aerosol Spray-10oz Can-Single), Odorless Non-Staining Industrial Rust Penetrant, NSF-H1 Registered, Kosher Certified (CKS102)

Bought this on a recommendation when I had an old drill press chuck that wouldn't come out, much less budge at all. Tried WD 40 and a ton of other products to no avail.. Two spray hits and and a overnight wait, one tap and BAM, the chuck came flying out ! This sits proudly at the FRONT of my spray shelf, and has been used on my tractor, riding mowers, chainsaws, ect.. The WD40 cans are crying in shame at the shelf back ! Thank you Kroil !!

I've tried plenty of penetrating oils over the years, but Kroil Clear is on another level. It breaks through rust, corrosion, and stubborn grime faster than anything I've used before—without the strong lingering smell or messy residue. The clear formula is a game changer: no staining, no dark drips, and it lets me see exactly what I'm working on. Within minutes, frozen bolts and seized parts loosen like they were never stuck. It's especially great for delicate restoration work where appearance matters. Plus, it's easy to apply, doesn't gum up, and leaves everything feeling smooth. If you want pro-level results without the mess, Kroil Clear is worth every penny. It's now a permanent part of my toolbox!