Would this or Clean Metal Primer be better for a car's pinch weld jack points, or control arms? Light surface rust where factory paint chipped off.

Thanks for reaching out. Rust-Oleum Stops Rust Rusty Metal Primer is designed for application over heavily rusted metal surfaces. For lightly rusted and clean metal, recommend using Rust-Oleum Stops Rust Clean Metal Primer. Be sure to remove all dirt, grease, oil, salt and chemical contaminants by washing the surface with a commercial detergent, or other suitable cleaning method. Rinse with fresh water and allow to thoroughly dry. Remove loose paint and rust with a wire brush or sandpaper. After priming, top coat with any Rust-Oleum Stops Rust Paint. https://www.lowes.com/pd/Rust-Oleum-Stops-Rust-Interior-Exterior-Multi-Purpose-Oil-Based-Primer-Actual-Net-Contents-12-fl-oz/3729863 - Rust-Oleum Product Support 6