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Car Tips and Articles

Oil Spray vs. Electromagnetic Rust Inhibitor – Which is best?

When Precise opened 30 years ago Electromagnetic Rust Inhibitors never existed. Our best rust protection for the undercarriage of your vehicle was an annual coating of oil each fall.

Oil Spray Protection

The theory behind oil spray protection was applying a petroleum based layer to form a barrier between your vehicles metal and the elements on a Canadian Road during winter. Things like salt, snow, grit and the mighty trinity all three clumped together in stuck to your undercarriage or in the crack and crevices of your car until they thaw out in spring.

The oil did work to some extent. While it survived the elements it did what it was supposed to do but it was messy, only protected the arrears that were sprayed and it wore off and needed to be applied each year.

I remember telling customers to drive down a dusty road after they had their vehicle treated and leave your car on the street for a couple of days instead of parking in your driveway as the excess oil dripped away. The oil coating actually needed the dust to adhere to the oil to increase the protection. This oil spray system also had seasonal limitation like it had to be done before winter or in the spring. It couldn’t be applied in the summer or winter and to be effective and protect as much area as possible you had to drill holes into the doors of you car to line the inside with the oil. While not ideal it was better than not doing anything at all.

Electromagnetic Rust Inhibitor – Electromagnetic Corrosion Inhibitor

Well times have changed and a number of years ago we started installing electromagnetic corrosion inhibitor systems such as the Final Coat 3000. Since rust is something your dread and wait to happen we can now report that the electronic rust inhibitor system is an effective method to avoid corrosion on your vehicle. We ourselves have used the system and our customers also agree that installing an electromagnetic rust inhibitor system makes a significant difference in protecting your vehicle from rust and corrosion.

Why we need Electronic Corrosion Systems on New Vehicles

Corrosion resistance has improved over the years. I remember before the 90’s you bought a new car and expected to have rust in some form or another within 3 years. Today’s vehicles are much better but they still rust due to the limited rust resistance build into them.

Todays cars are made of sheet metal coated on both sides with a zinc galvanized coating and then paint on top of the coated steel. This combination works well as long as the paint or galvanized coating is not compromised. Can you say “Stone Chip” or “Scratch” Deep stone chips and scratches scrap off the layer of zinc and expose the metal underneath. When moisture gets to the steel rust occurs. We all know how many stone chips we get on the upper part of our car think of how many you can’t see underneath your car or in arrears that rub together.

When stone chips or scratches expose steel zinc galvanizing naturally protects the steel. However moisture from the environment reacts with zinc to form zinc oxide barrier, which renders zinc galvanizing inert and unable to protect the steel.

Scratch Corrosion
The Science Behind an Electromagnetic Corrosion Inhibitor System

Electromagnetic corrosion protection enhances the rust inhibiting properties of your vehicle by way of emitting a radio frequency electromagnetic pulse wave signal that actually enhances the galvanizing properties in the sheet metal and protects against the formation of rust.

The electromagnetic corrosion module generates radio frequency pulse-wave surface currents over both sides of the steel.

Vehicle Metal Corrosion Inhibitor

As mentioned above when a scratch or stone chip compromises the barrier between the surface and the steel it is protecting moisture creates zinc oxide, which causes rust. The electromagnetic rust inhibitor’s radio frequency pulse wave breaks down the zinc oxide barrier, enhancing the ability of zinc galvanizing to protect the steel.

Electromagnetic Corrosion Inhibitor Science

How does an Electromagnetic Corrosion Inhibitor System work?

An electromagnetic corrosion system works by emitting a high frequency, battery-driven pulse wave that travel on both sides of the metal protecting both the inside and outside surface of the metal. The system helps inhibit the corrosion process which occurs naturally on any metal.

The other distinguishing feature that sets an electromagnetic corrosion inhibitor system apart from spray on systems is that they protect all sheet metal on your vehicle not just the exposed areas that can be coated with oil. So think stone chip or internal hard to reach arrears such as inside doors, fenders etc.


What about the price of an Electronic Corrosion System vs. Spay on Rust Inhibiting Oil?

 The business case is simple.

Spray on Oil rust inhibitor needs to be applied at least once each year. The price of oil is fluctuating and the price of the spray on coating fluctuates with the price of oil. So year after year you are reapplying and paying continued rust protection.

An Electromagnetic Corrosion Protection system is a one time cost that protects your entire vehicle not just where it reaches. At Precise Car Service we think the decision is obvious – electromagnetic corrosion protection is a better more effective comprehensive system and in the long run less expensive. Our customers attest to effectiveness of the system and its affordability.

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