Sofia Martinez
Plastic is a common material in modern cars, used for everything from headlights to bumpers. However, plastic is susceptible to sun damage, which can cause it to fade, discolour, crack, or deteriorate over time. This can make a vehicle look old or dated. While some suggest replacing damaged plastic, there are several DIY methods for restoring old automotive hard plastic. These include using a heat gun, applying olive oil, cleaning with soap and water, using a plastic restorer, or coating the plastic with a UV-protectant.
| Characteristics | Values |
|---|---|
| Cause of damage | Prolonged sun exposure, harsh weather |
| Damage | Fading, discolouration, cracking, brittleness |
| Prevention | Anti-UV additives, sealants |
| Restoration | Wash with soap and water, use plastic restorer, apply olive oil, use heat gun, soak in boiling water |
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What You'll Learn
Clean with soap and water
To restore old automotive plastic, cleaning with soap and water is an essential first step. This process will effectively remove any surface grime, dust, dirt, or debris, and prepare the plastic for further treatment.
Begin by mixing a small amount of mild soap with warm water. It is important not to use too much soap, as this could result in soap residue on the plastic. You can apply the soapy water mixture to a washcloth, a soft cloth, or a microfiber towel. If the plastic trim is severely soiled or stained, you can use a plastic auto cleaner or a small amount of laundry detergent. However, always test any cleaning solution on a small, inconspicuous area of the plastic first.
Gently wipe down the plastic trim with your chosen cloth, ensuring you cover the entire surface. For more intricate or detailed areas, you may need to use a soft-bristled brush to reach into tight spaces. If the plastic trim is heavily soiled or stained, you can also try immersing it in the soapy water mixture for a more thorough clean. Ensure you rinse the trim well with clean water afterward to remove any remaining soap residue.
Once you have finished cleaning the plastic trim with soap and water, it is important to dry it thoroughly. Use a clean microfiber towel or a soft, dry cloth to wipe down the surface. Ensure the cloth is free of any dirt or debris that could scratch or smear the plastic. You may also want to vacuum the area to remove any remaining dust or moisture.
By cleaning the old automotive plastic with soap and water, you will effectively remove any built-up dirt, grime, and debris. This process will restore the plastic's appearance and prepare it for further treatment, such as applying a protectant or sealant to preserve its condition.
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Use a heat gun
Using a heat gun is a popular method for restoring old automotive hard plastic. However, it is important to note that this method has its limitations and potential drawbacks. Firstly, it is temporary, and the plastic will eventually fade again. Additionally, it can only be done a few times, as the plastic becomes more brittle with each application, increasing the chances of cracking and breaking.
When using a heat gun, it is recommended to hold the gun about 3 inches away from the plastic surface and slowly move it in an even pattern, ensuring not to stay in one spot for too long. This process should be done on a clean surface, as any remaining dirt or cleaning products can result in blotchy or spotty finishes. It is also important to wear protective gear, such as cotton gloves, and be cautious when working near flammable areas, such as the gas cap.
The exact chemical process behind the heat gun method is still debated. Some believe that the heat brings oils in the plastic to the surface, creating a temporary improvement in appearance. Others suggest that the heat melts the surface layer, allowing the oxidized surface to mix with the substrate and causing a smoothing effect. However, some disagree with the oil theory, arguing that once plastic is formed, it is impossible to separate its components.
While the heat gun method can improve the appearance of automotive plastic, it does not address the underlying chemical breakdown caused by UV radiation and exposure to heat and sunlight. This breakdown results in the fading and discolouration of plastic over time. As an alternative to the heat gun method, some people opt for plastic restorers, such as coatings or polishes, to temporarily improve the appearance of their automotive plastic. However, these products can wear off easily and often do not offer UV protection, leaving the plastic vulnerable to further damage.
Overall, while using a heat gun to restore old automotive hard plastic can be effective in the short term, it is important to understand its limitations and potential drawbacks. The process requires careful execution and should be done with caution to avoid further damaging the plastic.
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Apply olive oil
Olive oil can be used to restore automotive hard plastic. To do this, follow the steps outlined below:
Firstly, wash the plastic surface with soap and warm water to remove any dirt or debris. Dry the surface thoroughly with a towel. It is important to start with a clean surface as olive oil will absorb better, and dirt or stains can be burned into the plastic if a heat treatment is applied.
Next, pour a small amount of olive oil onto a washcloth, paper towel, or dry microfiber towel. A coin-sized amount of olive oil is usually sufficient, as a little goes a long way. You can always add more oil later if needed.
Rub the oiled cloth onto the plastic surface using circular motions. Focus on the faded or discoloured areas, ensuring that the oil covers these sections adequately. If the cloth becomes dirty, turn it over or use a new section, applying more oil as necessary.
After treating the plastic, allow the olive oil to absorb and soak into the surface. This should take around five to ten minutes.
Finally, grab a separate dry towel and buff the surface lightly using rapid circular motions. This will remove any excess oil and give the plastic an extra shine.
It is important to note that the treatment's effectiveness may diminish over time, especially with repeated washings or weather exposure. To maintain the results, reapply olive oil at least weekly, or periodically depending on the intensity of sun exposure. Additionally, olive oil may attract dirt and dust, and it can also turn rancid after a few months.
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Try a plastic restorer
Plastic restorers are a great way to bring your car's plastic components back to life. They can restore vibrancy, enhance aesthetic appeal, and protect against UV rays, pollutants, and harsh weather conditions.
There are many plastic restorers on the market, but not all are created equal. It's important to choose one that suits your car's needs and your preferred finish. For example, you might prefer a sleek, high-gloss look or a more natural satin finish.
One popular option is the CAR GUYS Plastic Restorer, a water-based polymer formula that contains a patented polymer additive. It works on any type of interior or exterior rubber, plastic, or vinyl material, such as trim, fenders, bumpers, dashboards, tires, and engine bay components. The kit comes with everything you need, including a foam applicator, and the company offers a full refund if you're unhappy with the product.
Another option is the Chemical Guys line of plastic restorers, which includes specialized formulas to restore, protect, and enhance plastic, vinyl, and rubber components. Their VRP Vinyl, Rubber, and Plastic Shine and Protectant is a fan favorite.
When using a plastic restorer, it's important to follow the instructions carefully. Most products require you to clean and dry the plastic surface before applying the restorer with a foam or microfiber applicator. Some products may need to be buffed off, and some may require multiple applications for the best results.
In addition to commercial plastic restorers, there are also DIY solutions you can try. One method involves using a heat gun to heat the plastic, drawing out the oils within the material. This can restore the plastic's color and make it darker and richer. However, it's important to be careful when using a heat gun, as it can warp or discolor the plastic. Another DIY solution is to treat the plastic with olive oil, which can restore the plastic's shine and natural color.
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Protect with UV sealant
Plastic is used extensively in modern cars, from cable insulation to dashboards, tanks, and under-the-hood components. While plastic is lightweight, cheap, and easy to mould, it is susceptible to damage from UV rays, which can cause discolouration, fading, cracking, and deterioration. To protect automotive plastic from UV damage, a UV sealant can be applied.
UV sealants are designed to protect plastic surfaces from the harmful effects of ultraviolet radiation. When choosing a UV sealant, it is important to select a product specifically formulated for automotive plastic, as these products will offer superior protection against UV rays. Some recommended products include 303 Aerospace Protectant, which provides superior UV protection and prevents fading and cracking, and Adam's Total Interior Cleaner & Protectant, which offers ceramic-infused UV protection for plastics, leather, vinyl, and glass. Another option is to use a plastic restorer, such as Solution Finish Trim Restorer, which can be used in conjunction with a UV sealant like Solution Finish Over The Top Plastic Sealer. This combination can restore and protect plastic trim, preventing it from fading and deteriorating due to UV exposure.
When applying a UV sealant, it is important to follow the manufacturer's instructions and take the necessary safety precautions. Some products may require multiple applications for optimal results. Additionally, while UV sealants provide protection, they do not offer indefinite defence against UV rays. Reapplication may be necessary over time, especially if the sealant is washed off or degraded.
To further protect automotive plastic from UV damage, it is advisable to park in shaded areas or garages whenever possible. Minimising direct sunlight exposure is an effective way to prevent UV-related discolouration and deterioration. Combining the use of UV sealants with parking in shaded areas can significantly prolong the lifespan of automotive plastic components.
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Frequently asked questions
There are several methods for restoring old hard automotive plastic, including:
- Using a plastic restorer or black plastic trim moisturiser
- Applying heat with a heat gun
- Soaking the plastic in boiling water
- Using a diluted mix of bleach, mild detergent, and water
- Applying a product like Everbrite coating or Solution Finish Over The Top Plastic Sealer to protect against UV rays
A plastic restorer is a product that can be applied to old, faded plastic trim to restore its original colour. To use a plastic restorer, start by cleaning the plastic trim with isopropyl alcohol or soap and water, then use a microfiber or foam applicator to apply the restorer. Wipe off any excess product and let the plastic dry for several hours.
Applying heat to plastic draws out the oils within the material, restoring its shine and colour. This can be done with a heat gun or by soaking the plastic in boiling water. When using a heat gun, always start with a clean surface to avoid burning contaminants into the plastic, and be careful not to warp the plastic. After heating, treat the surface with olive oil, WD-40, or a trim restoration product to make it darker and protect against sun and rain.
Products like Everbrite coating and Solution Finish Over The Top Plastic Sealer are designed to protect plastic from UV damage and fading. These products can be used as a standalone treatment on new or good-condition plastics or as a topper on plastics that have been restored with a trim restorer.
If your plastic bumpers or trim are severely weathered, cracked, or scratched, it may be best to replace them altogether. However, if you're looking for a more affordable solution, there are DIY methods you can try, such as cleaning the plastic with soap and water, followed by treating it with olive oil or a plastic restorer. Keep in mind that these methods may not provide long-lasting results.
