Buying Guide: Best Car Care Corrosion & Rust Inhibitors

rusty car
Disclosure: We receive compensation from the companies whose products we review. We are independently owned and the opinions expressed here are our own.

Rust is the deteriorated state of iron as a result of oxidation; water and air combine to form this crust on your car body. Cars are made of iron and are likely to rust over time due to the moisture absorbed from the road. Road salts also cause car rust and this rust can be reduced by using a corrosion inhibitor. This is a chemical substance that when added to a liquid reduces the corrosion rate of iron. That means you need the best corrosion & rust Inhibitors to stop this process.

Corrosion & rust inhibitors are additives to the moisture that surrounds the iron. One of the best ways to protect your car against rust is to have the body oiled annually with a rust proofing spray. The best time to have your car oiled is springtime. That is when moisture levels undulate and cars are most prone to rusting.

Our Car Care Corrosion & Rust Inhibitors Ratings At-A-Glance

Bestseller No. 1
LPS 3 Premier Rust Inhibitor, 1 Gallons
  • Protects for up to 2 years indoors
  • Prevents rust and corrosion
  • Provides non-sling lubrication
Bestseller No. 2
Rust-Oleum 224284 Stops Rust Inhibitor 10.25-Ounce Spray, Clear
  • Item Weight: 1.17 lb
  • Country of Origin: United States
  • Color: Clear
Bestseller No. 3
WD40 300035 Specialist Corrosion Inhibitor Spray - 6.5 oz.
  • Blocks rust and corrosion
  • Protects metals up to 2 years
  • 50-state VOC compliant
Bestseller No. 4
Fluid Film 1 Gallon Can Rust Inhibitor Rust Prevention Anti Corrosion...
Bestseller No. 5
Rust-Oleum, Black, 248658 Rust Reformer Spray, 10.25 oz, 10.25-Ounce
  • Use on any rusty, metal surface to Instantly convert rust to a flat black, paintable surface that is protected and...
  • Oil based formula creates a bond with rusted surface that can be easily painted
  • Dries tack free in 20-40 minutes, allow 24 hours before applying topcoat

Types Of Rust Inhibitors

Oil sprays: This has been a very effective rustproofing product. It will creep into door seams, weld spots, joints, and folds where the rust is often known to start.

It also protects your electrical parts, fuel line, and brake against corrosion. These oil sprays are of two kinds namely; dripless oil spray and drip oil spray

Dripless oil spray: This is a very thick, wax-like oil spray applied to the entire body of the vehicle. The main gist of this spray is that it is dripless because the substance hardens upon drying and it is colorless.

There is a minor issue though, because of the dripless viscosity, you have to make sure the substance gets applied everywhere because it cannot get into all the nooks and corners in the same way drip oil sprays can.

Drip oil spray: this is mostly recommended by many car experts for rust prevention. It is easier to apply and it is watery enough to reach more parts of your car than the dripless oil spray.

However, there is a slightly annoying feature of using this product, it leaves stains behind in your driveway, garage etc. The application should be done annually.

And that’s not all

Sealants are a rust-inhibiting product that usually contains tar, wax, or polymers. This method is known as “undercoating”. Sealants have been shown to provide a protective barrier for the car against moisture and road salt. It basically involves spraying a black, tar-like substance on the exposed parts of the body of your car, which in turn hardens and forms a protective barrier/shield against moisture, salt, and other elements that cause rust.

However, it is not like oil sprays, sealants do not creep into a car’s joints and folds where rust begins. People buy sealants from car dealers. For application to be effective, it must be done when the car is clean and dry. If the application is not properly done, cracks may start developing in the protective coating over time and moisture will be trapped within and this will lead to rust.

Electromagnetic rust inhibitor: this is the newest form of rust proofing technology. It involves setting up a small device in your car, known as an electronic module, which then sends an electric current through the metal.

The current being sent stops car from rusting Electromagnetic rust inhibitors are other anti-rust products commonly sold by car dealers. Although, they are expensive and not as effective as oil sprays or sealants.

There have been reviews that installing an electromagnetic rust inhibitor system makes a noticeable difference in protecting your vehicle from rust and corrosion.

How Car Corrosion & Rust Inhibitors Work

Car corrosion & rust inhibitors work differently depending on the type you use. But there are some common ways that inhibitors work:

  • Sealants work by forming a protective barrier on the iron’s surface. This barrier keeps corrosive matter from coming in contact with your car’s body.
  • Oil sprays inhibit either the reduction or the oxidation of the corrosion system, it also slows rust formation by absorbing the oxygen dissolved in the system.
  • Electromagnetic rust inhibitor works by emitting a high frequency, a battery-driven electric current that travels on both sides of the iron shielding both the inside and outside surface of the iron.

What Is The Difference Between Spray Oil Rust Inhibitor, Sealant Rust Inhibitor, and Electromagnetic Rust Inhibitor?

Oil spray rust inhibitor is mainly used on the outer body, it is a common type of rust inhibitor and has proven to be effective against rust. It needs to be applied yearly and it is quite affordable.

While sealant rust inhibitor is similar to oil spray, it works differently because it forms a protective barrier against rust. It is also affordable. And finally, an electromagnetic rust inhibitor is a one-time product that protects your entire car.

Why Do You Need Corrosion & Rust Inhibitors?

You shouldn’t have to think twice about using a rust inhibitor. Cars overtime will definitely begin to rust because of moisture and road salt. And within a year or two, you would begin to see the effect of using the car and the car would start to show signs of wear and tear.

What to Consider Before Buying Corrosion & Rust Inhibitors

Before you think of buying a rust inhibitor, you should have in mind a few things. Below are a few things to do:

  • Know what you need: Corrosion & rust inhibitors are of different types and come in different forms. You should know the type of inhibitor you can afford.
  • Do the research for your options: There are various rustproofing products available, be sure to take a look at all the available options instead of taking the first product you see. You would have the opportunity to know the product that works and is affordable for you.
  • Read through the customer reviews: There are websites with reviews of their products and these are a great source of customer information. Good reviews from customers would help in knowing the inhibitor to purchase for your car.

Last update on 2021-01-25 at 21:49 / Affiliate links / Images from Amazon Product Advertising API

Click Here to Leave a Comment Below 0 comments