Ethan Clarke
Changing the colour of a plastic gas tank can be done in a variety of ways, including painting, dyeing, or using vinyl covers. However, it is important to note that some methods may not be suitable for all types of plastic, and there are potential issues to consider, such as fuel vapour escaping and causing bubbling in the paint or dye. To avoid this, one must clean the tank thoroughly, use the right type of paint or dye, and ensure proper ventilation during the process. Additionally, the colour chosen may impact the absorption or reflection of heat, which could affect the performance of the plastic. Overall, while customising the colour of a plastic gas tank is possible, careful consideration and preparation are necessary to achieve the desired results.
Characteristics and Values Table for Changing Plastic Gas Tank Colour
| Characteristics | Values |
|---|---|
| Reasons for colouring | Aesthetics, branding, identification, reducing heat transmission |
| Colouring methods | Inserting colour pigments into the mould, using compounded resin, painting |
| Plastic types | Polyethylene, polypropylene, poly-eythl, poly-trilene |
| Preparation methods | Washing with acetone, soap and water, scrubbing, sanding |
| Primers | Epoxy, adhesion promoter, satin white plastic bonding paint |
| Paints | Plasti-coat, PPG flat black automotive paint, Krylon |
| Additional steps | Lining the inside, applying stickers, clear coat, polish and buffing |
| Challenges | Bubbling, peeling, discolouration, heat absorption, off-gassing |
| Alternatives | Vinyl tank covers, buying new tanks |
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What You'll Learn
Cleaning the tank
Firstly, it is crucial to remove any remaining fuel, grease, or other contaminants from the tank. This can be done by thoroughly washing the tank, both inside and outside, with a suitable cleaning agent. In some cases, a strong solvent like acetone may be required to effectively remove stubborn residues. Multiple washes over several days may be necessary to ensure the tank is completely clean.
Once the tank is free of any contaminants, the next step is to prepare the surface for the new colour application. This typically involves scuffing or lightly sanding the surface of the plastic. Sanding creates a rougher surface that will help the new paint or dye adhere better. It is important not to over-sand the plastic, as this may damage the integrity of the material. A fine-grit sandpaper, such as 180-grit, is recommended for this step.
After sanding, it is a good idea to wash the tank again with soap and water to remove any dust or debris created during the sanding process. This ensures that the tank is completely clean and ready for the next step, which may involve applying an adhesion promoter or primer.
It is important to follow the specific instructions provided by the manufacturer of the paint or dye that will be used. Some products may require additional surface preparation, such as the application of an adhesion promoter or a specific type of primer, as mentioned by one source. Following these instructions carefully will help ensure the best results and a long-lasting colour change.
By thoroughly cleaning and preparing the plastic gas tank, you will achieve a smoother and more uniform finish when applying the new colour. This process helps to ensure that the final result will be aesthetically pleasing and durable, reducing the likelihood of issues such as peeling or bubbling paint.
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Using paint
Painting a plastic gas tank can be a tricky process due to the risk of bubbling, peeling, or chipping. However, with the right preparation and products, it is possible to achieve a successful paint job. Here is a step-by-step guide on how to change the colour of your plastic gas tank using paint:
Firstly, it is important to clean the tank thoroughly. This involves washing the tank inside and outside with a solvent such as acetone to remove any traces of old fuel, grease, or oil. It is recommended to do this multiple times over several days to ensure the tank is completely clean. Once clean, the surface of the tank should be scuffed lightly with sandpaper to create a rough surface that will allow better paint adhesion.
Next, you will need to choose the appropriate paint for the job. It is recommended to use a paint product specifically designed for use on plastic, such as Krylon Fusion or Plasti-coat. These paints are known to adhere well to plastic surfaces and can be found at local hardware stores or online. It is important to note that regular spray paint is not suitable for plastic gas tanks as it will likely peel or bubble.
When you are ready to begin painting, ensure the work area is well-ventilated and wear the appropriate safety gear, including a respirator and gloves. Start by applying a light mist of paint to the surface of the tank and allow it to dry completely according to the manufacturer's instructions. Repeat this process with multiple thin coats of paint rather than a single thick coat, as this will help prevent running and dripping.
After each coat, inspect the tank for any signs of bubbling or peeling. If you notice any issues, stop the painting process and troubleshoot the problem. It may be necessary to start over or seek professional help. Once you have achieved the desired colour and coverage, allow the paint to cure for several days before refilling the tank with fuel.
Finally, it is important to note that painting a plastic gas tank is not a permanent solution. The paint may eventually chip, peel, or bubble, and you may need to reapply the paint or explore other options such as using fabric or decals to change the colour of your gas tank.
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Using dye
Dyeing a plastic gas tank is a good option if you want to change its colour without painting it. This is because gasoline "breathes" through the gas tank, and an extra layer of paint will cause bubbling.
There are several different methods for dyeing a plastic gas tank. One popular method involves using Rit Dye, a dye normally used for clothing. First, you must clean your tank with soap and water, and remove any stickers or components you do not want to colour. Next, mix the Rit Dye with boiled water in a bucket, following the package instructions for the correct ratio of dye to water. Then, submerge the gas tank in the bucket, making sure the gas cap is removed so that the inside of the tank can also be dyed. Cover the bucket with aluminium foil and leave the tank to soak until the desired colour is achieved.
It is important to note that not all plastics absorb dye in the same way. Some plastics will absorb the dye nicely, resulting in an even colour, while others may only absorb it partially, leading to a faded or uneven appearance. Additionally, clear plastics may turn purple or grey instead of the intended colour. Therefore, it is recommended to test the dye on a small, inconspicuous area of the tank first to ensure satisfactory results.
Another method for dyeing a plastic gas tank involves boiling the tank in a dye mixture on the stovetop for 30 minutes. After boiling, wrap the pan in tin foil and place it on top of a furnace at a temperature between 80-90 degrees Fahrenheit for 12 hours. This method may not result in an even colour and could stain the outside of the tank, so it is important to test it on a small area first.
When dyeing a plastic gas tank, it is also important to consider the colour you are aiming for. Darker colours, such as black, may require more dye and multiple attempts to achieve the desired shade. Lighter colours, such as yellow or orange, may be more challenging to dye and may require a different process.
Overall, dyeing a plastic gas tank can be a cheap and easy way to change its colour without the drawbacks of painting. However, it is important to research the type of plastic your tank is made of and test the dye on a small area first to ensure the best results.
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Using vinyl tank covers
One way to change the colour of your gas tank is to use vinyl tank covers. This method is a good option if you're looking for a durable and cost-effective solution. When installing a vinyl wrap film, there are a few tricks to achieving a seamless and long-lasting finish.
Firstly, it's important to consider the colour of your vehicle and the type of vinyl film you're using. If you're wrapping a light-coloured car with a full-print film, for instance, cutting the vinyl wrap film on the gas cap's side can expose the original paint colour. To avoid this, you can use masking tape to separate the gas lid surface into top and bottom sections. Cut on the gas lid's side for the bottom part, and on the fender's side for the top section, leaving extra material to wrap around the lid.
Another challenge when wrapping a gas tank is ensuring long-term durability. The bottom edge of the gas tank is particularly vulnerable to gas dripping, which can damage the vinyl wrap film and cause it to lift over time. To address this issue, you can use an edge seal pen to apply a coat of edge seal around the bottom of the tank once the vinyl is wrapped. This will help prevent gas from getting underneath the film.
Additionally, when wrapping the inside edge of the gas tank, installers typically cut on the outside edge. However, this can sometimes result in the vinyl falling short, especially with light-coloured vehicles. In such cases, applying a pre-cut black matte strip around the inside of the gas tank can help achieve full coverage. Heat-seal the edges with a heat gun to ensure a durable finish.
Overall, using vinyl tank covers is a versatile and cost-effective way to change the colour of your gas tank. With careful preparation and the right techniques, you can achieve a seamless and durable finish that enhances the appearance of your vehicle.
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Using a compounded resin
The advantages of using a compounded resin include the preservation of the reaction and no impact on the catalyst or peroxide, which allows for cross-linking in XLPE tanks. Additionally, you can achieve a more consistent colour by mixing only the amount of colour that is needed, and multiple colours can be produced from one large box of uncoloured resin.
When choosing a colour, it is important to consider the impact of different colours on the processing of polyethylene tanks. For example, black resin extends the life of the tank outdoors, but it will also heat up more under the sun compared to lighter colours. Therefore, for small tanks or warmer environments, a white or lighter-coloured resin may be more suitable to deflect heat.
To change the colour of your plastic gas tank using a compounded resin, you will need to purchase a coloured resin that matches your desired colour. You can find these resins at speciality stores or online. The process of colouring the tank involves melting the resin and applying it to the tank, which may require specialised equipment.
Overall, using a compounded resin is a reliable and effective way to change the colour of a plastic gas tank, offering a consistent and vibrant finish while also preserving the performance of the tank.
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Frequently asked questions
There are several ways to change the colour of a plastic gas tank. You can use a dye, or you can paint it. If you are using a dye, you will need to follow the specific instructions for that product. If you are painting, you will need to thoroughly clean the tank, apply an adhesion promoter, then a primer, before painting and finishing with a clear coat.
You should use a paint that is designed for use on plastic. Some options include epoxy primer and paint, satin plastic bonding paint, and Plasti-coat spray paint.
Yes, it can. Any coating on the inside of the tank may affect the performance. It is important to ensure that any coating is not compromising the structure of the plastic. For example, some paints may cause bubbling, which can lead to the liner coming off.
The colour you choose may depend on the functionality of the tank. For example, black tanks heat up more than light-coloured tanks, so if your tank is exposed to direct sunlight, a lighter colour may be preferable.
