Penetrating oil, also known as penetrating fluid, is a very low-viscosity oil. It provides assistance to parts like nuts and bolts, because it can penetrate into the narrow space between the threads of two parts. It can also be used as a cleaner; however, it should not be used as a general-purpose lubricant or a corrosion stopper.
"Using penetrating fluids as general-purpose lubricants is not advisable, because such oils are relatively volatile," said Karl Dedolph at Champion Brands, LLC. "As a result, much of the penetrating oil will evaporate in a short amount of time, leaving little residual lubricant. Besides nuts and bolts, other uses include removing chewing gum and adhesive stickers, and lessening friction on metal-stringed musical instruments"
According to Dedolph, Champion's new RX-454 lightly lubricates, and stops rust.
"It makes repairs work easier whenever trouble is caused by corrosion, moisture, dirt or friction," Dedolph added. "Great for drying wet ignition systems, silencing squeaks, and will not harm rubber, plastics or painted surfaces."