Knock'er Loose® Penetrating Solvent, 16 oz aerosol

Designed for deep penetration through rust and corrosion, this solvent is best used directly on seized parts. It's always a good idea to test any solvent on a small, inconspicuous area first to check for compatibility with your truck's paint.

Rust, scale, and corrosion are exactly what this formula was built to cut through. If you've got bolts or fittings that have been seized up and won't budge, the penetrating solvent works its way in and breaks that grip loose so you can actually get things apart without snapping hardware or tearing up threads. The aerosol can helps you get it right where you need it without soaking everything around it.