- Automotive Rust Insurance - Eastwood Tech Library
Why do you need rust insurance? Because rust usually starts where you can't see it, working from the inside out. With changes in temperature and humidity, condensation forms on the often-unprotected inner body cavities. The most rust-prone areas are usually in the lower sections of the vehicle: rocker panels, lower fenders, inside doors, and other areas beneath an imaginary line drawn slightly above the wheel arches.
What can you do? Few people can keep their cars in a perfect climate, so the only practical alternative is to seal those rust-prone inner surfaces. The problem, of course, is two-fold: How do you properly prep? And, how do you reach all those inside panels?
Prep is no longer a problem because Eastwood's Heavy-Duty Anti-Rust uses capillary action to displace moisture and penetrate through existing rust to prevent further moisture and air from reaching the surface. Heavy-Duty Anti-Rust is a waxy, oily product that eventually dries as hard as candle wax. This product also works well to lubricate internal window mechanisms and leaf springs. The aerosol version has a short extension wand, but how can you treat a long section of rocker panel or door?
Eastwood's Rustproofing and Undercoating System is suitable for spraying Heavy-Duty Anti-Rust and Eastwood's Rubberized Undercoating (both included) in out-of-the-way areas. Includes 16" rigid wand, 2 flexible wands, plastic bottle, gun assembly, Unibit drill bit, 25 plugs, and 1-qt. each of Anti-Rust and Rubberized Undercoating. This gun works best at 40-60 psi (requires 5-6 cfm). The various extension wands can usually be inserted into existing openings, or, where no holes exist, a 1/2" hole can be drilled. The Unibit drill bit (included) is a single-flute, shallow-stepped drill that's perfect for drilling a hole near a backing panel. After the treatment, "cap" the hole with a 1/2" plastic plug (included).
Be sure to clear all drain holes located along the bottom edges of most rocker panels and doors, and provide some means to collect the surplus solution that drips out. This surplus can usually be strained and reused.
For inner fender areas, Eastwood's Rubberized Undercoating provides a nicely textured, satin black barrier against stone chips. It's paintable too, so you can match the body color, if desired.