BOESHIELD T-9 Loosening Rust Prevention Spray For Cars, 12-Ounce

Last updated date: June 7, 2022

DWYM Score

9.6

BOESHIELD T-9 Loosening Rust Prevention Spray For Cars, 12-Ounce

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Update as June 7, 2022:
Checkout The Best Rust Prevention Sprays For Cars for a detailed review of all the top .

Overall Take

You'll want to keep a can of this rust prevention spray for cars on hand. It works well for a wide variety of items, including your tools, bicycles, automobiles and boats. The spray cleans away dirt, while adding a protective layer that repels moisture.


In our analysis, the BOESHIELD BOESHIELD T-9 Loosening Rust Prevention Spray For Cars, 12-Ounce placed 1st when we looked at the top 8 products in the category. For the full ranking, see below.

From The Manufacturer

On a seafaring yacht, a dusty ATV, or a shower door, T-9 has you covered. Boeshield T-9 endures muddy bike trails, rain-soaked back roads, and salted highways. It withstands farmer’s fields, offshore oil rigs, and carpenter’s workshops. For everyone from firefighters and road crews to cyclists and sailors, Boeshield T-9 is the proven solution. T-9 attacks existing corrosion, loosens rusty parts, and flushes out old lubricants. It is also extremely useful for drying wet parts, electrical motors and circuits, ignitions, and connectors. Apply T-9 and wipe off the excess for immediate use. T-9 dries to a waxy, waterproof finish without leaving a sticky film to attract dirt, dust, or mud. T-9 stays liquid long enough to permeate metal crevices and seep deep inside assembled components to leave a durable protective coating as well as lubricating and protecting-all without dismantling your equipment. Apply T-9 to any metal surface and let it dry. One simple step gives you a thin, penetrating film of durable, waterproof protection and lubrication that endures, months after month or mile after mile. T-9 dries to a clean, waxy, waterproof film that won’t wash off in rain, puddles, or mud. You can rinse away sand, dust and grime with water, while leaving the lubricant intact. T-9 will not harm paint, plastic, rubber, fiberglass, or vinyl. It can be used on engines, wiring, and belts. T-9 is nonconductive and will not cause short circuits, so it’s also safe to use on electronics. Use solvent or any emulsifying cleaner to easily remove T-9, or simply respray and allow T-9 to dissolve itself before wiping it off.

An Overview On

Nothing ruins a car faster than rust. Once you find it, the problem can be too far gone to repair. Though auto manufacturers use modern materials and test and treat them, vehicles are still vulnerable to rust.

There are three main types of rust prevention car sprays: tar-based, drip oil and dripless. Tar-based sprays, also known as undercoating, are sprayed onto the exposed parts in the car’s underbody, and in wheel wells and floor pans. These form strong shields, but they can crack.

Drip oil sprays are applied through holes that are first drilled into the vehicle’s body. This is the most common kind of car rust-proofing, but it needs to be done once a year.

The third type, dripless oil sprays, are more similar to tar-based ones. These also harden after you spray them on. As with drip sprays, though, holes still need to be drilled in the vehicle before applying.

Car owners can pay for rust prevention services when purchasing their vehicles. This may already be included in the initial purchase cost. Rust proofing can also be done at a body shop, and can cost anywhere from $125 to $150. Another option is to buy the spray and do it yourself. Most can make wide or narrow sprays, because they come with interchangeable nozzles. Some leave sticky films, while others dry faster, but all are cheaper than taking a car to the shop.

Rust conversion sprays are different, and are used on existing rust. These aerosol sprays convert rust into black coatings, which can then be primed and painted with oil-based top coats. Read the instructions carefully, as you may also have to sand the finish after the spray is applied.

The Buying Guide

  • Since tar-based sprays can crack, the vehicles should be inspected at least once a year.
  • Drip oil sprays can be messy, so you may not want to apply them when the vehicle is in the driveway, otherwise you may see oil stains.
  • If using rust converter spray, first remove the loose rust with a wire brush. You don’t want to paint over that.