Mercedes Mullins
While vinyl tubing is readily available and affordable, it is not suitable for diesel fuel lines. Vinyl tubing will quickly harden and turn yellow, and can cause leaks. It is not fuel-rated, meaning it could burn your truck to the ground. It is recommended to use fuel-rated hoses for everything between the tank and the IP.
Characteristics and Values
| Characteristics | Values |
|---|---|
| Durability | Some users report that vinyl tubing hardens and yellows within a few months to a year, especially when exposed to cold temperatures. Others have experienced leaks and breakage with prolonged use. |
| Compatibility with diesel fuel | Not specifically designed for constant fuel use. May not be suitable for diesel fuel due to potential safety hazards. |
| Flexibility | Vinyl tubing tends to soften when warm, but can become almost jelly-like, which may affect performance. |
| Visibility | Clear vinyl tubing allows for visual inspection of fuel and detection of air bubbles. |
| Cost | Vinyl tubing is a more affordable option compared to other fuel lines, such as chlorinated fuel line or silicone gas line. |
| Suitability | Recommended for temporary use or testing purposes. Not advised for long-term or constant fuel exposure. |
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What You'll Learn
Vinyl tubing will harden and yellow quickly
While vinyl tubing can be used for diesel fuel in a pinch, it is not ideal as it will harden and yellow quickly. This colour change can be noticed within a month, and while it may not leak, the hardening of the vinyl could cause it to become leaky over time.
Vinyl tubing is typically used for soda fountains and is not designed for constant fuel use. The material is not fuel-rated, meaning it could burn when exposed to diesel fuel. This poses a significant safety risk, especially in vehicles.
The hardening of vinyl tubing can be exacerbated by exposure to ethanol, which can cause the vinyl to crack within a few months. This makes it unsuitable for use with diesel fuel, as it may not be able to withstand the pressure and temperature fluctuations that fuel lines experience.
While some users have reported using vinyl tubing for diesel fuel for short periods without issue, it is generally recommended to use fuel-rated hoses specifically designed for fuel applications. Rubber fuel lines, for example, are designed to withstand constant fuel use and are a safer alternative to vinyl tubing.
It is important to prioritize safety and durability when choosing materials for fuel lines, even if it means a higher upfront cost. Regular maintenance and replacement of fuel lines are also crucial to prevent leaks and ensure the safe and efficient operation of diesel engines.
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It's not designed for constant fuel use
While vinyl tubing can be used for diesel fuel in a pinch, it is not designed for constant fuel use. One user on a forum noted that they had a vinyl tubing on top of their IP for a year, and while it was soft when warm, they replaced it after a year. They also mentioned that vinyl tubing is not designed for constant fuel use and can break easily, leading to inconvenience and wasted time.
Another user shared a similar experience, stating that they had vinyl tubing in their engine compartment with diesel running through it, and within a month, the material turned yellow and hardened. They also mentioned that while the tubing may hold up for years, it will likely become leaky due to hardening.
The general consensus among users is that vinyl tubing is not a reliable long-term solution for diesel fuel lines. It tends to harden and turn yellow within a few months to a year, and there is a risk of leakage or breakage. One user even warned that using the wrong type of tubing could burn your truck to the ground.
It is important to prioritize safety and use the appropriate fuel-rated hoses for diesel fuel lines. While vinyl tubing can be used temporarily or in an emergency, it is not a suitable long-term solution. Regular rubber fuel lines, designed specifically for fuel applications, are a better option for diesel fuel lines as they are more durable and less likely to leak or crack over time.
In conclusion, while vinyl tubing may be tempting due to its lower price compared to chlorinated fuel lines, it is not designed for constant diesel fuel use. It is crucial to prioritize safety and durability by opting for fuel-rated hoses specifically designed for fuel applications. Regular maintenance and timely replacements are also essential to ensure the integrity of the fuel system and prevent potential disasters.
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Clear vinyl is good for seeing air bubbles in fuel
While vinyl tubing can be used for diesel fuel in a pinch, it is not recommended for constant fuel use. Vinyl tubing will harden and turn yellow within a few months, especially when exposed to ethanol, and may eventually start leaking. Clear vinyl tubing is also not fuel-rated, meaning it does not meet the safety standards for fuel lines, and could potentially burn your truck to the ground.
However, one advantage of clear vinyl tubing is that it allows you to see inside the fuel line and check for air bubbles. Some users opt for clear vinyl tubing because it is cheaper than chlorinated fuel lines, and they can easily replace it every few years. Clear braided high-pressure tubing, for example, can withstand 250 psi at 70 degrees Celsius, and its thickness makes it easier to clamp down on.
Clear vinyl tubing can be useful for temporarily testing fuel systems. One user on a diesel forum mentioned that they keep a chunk of vinyl tubing in their test tools kit to splice into fuel systems and check for air bubbles. They flush and blow-dry the tubing after each use, and it has lasted for years.
Another user on the same forum noted that they had used clear vinyl tubing under their hood for years without any leaks. They liked being able to see the fuel and check for bubbles. However, they also observed that the tubing would yellow and harden within a month, remaining flexible only when warm.
While clear vinyl tubing can be useful for temporarily testing fuel systems and checking for air bubbles, it is important to replace it with proper fuel-rated hoses for long-term use to avoid potential safety hazards.
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It's cheaper than chlorinated fuel line
While it is not recommended to use vinyl tubing for diesel fuel, one of the reasons why people opt for it is its low price. Compared to chlorinated fuel lines, vinyl tubing is much cheaper, making it a tempting option for those on a budget.
Users on online forums have discussed how the price of vinyl tubing is very attractive, especially when compared to the increasingly expensive chlorinated fuel lines. This is especially true for those with small engine projects or those who need a quick fix in a pinch. The low cost of vinyl tubing can be appealing, even if it is only a temporary solution until a proper fuel line can be purchased.
Some people have shared their experiences using vinyl tubing for diesel fuel, noting that while it may harden and yellow over time, it can still function without leaks for several years. This further reinforces the idea that vinyl tubing can be a cost-effective option, especially for those who are willing to replace it every few years or so.
However, it is important to note that using vinyl tubing for diesel fuel comes with risks. Some users have shared their concerns about the potential dangers, including leaks and engine damage. While vinyl tubing may be cheaper upfront, the potential costs of repairs and replacements in the long run could outweigh the initial savings.
Therefore, while vinyl tubing may be a cheaper alternative to chlorinated fuel lines, it is important to carefully consider the risks and potential long-term costs before making a decision. It is always recommended to use fuel lines that are specifically designed for diesel fuel to ensure safety and durability.
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Use fuel-rated hose to avoid disaster
While vinyl tubing may be tempting due to its low price, it is not the best option for diesel fuel lines. Vinyl tubing will harden and turn yellow within a few months, especially when exposed to fuel and ethanol. This can lead to leaks and potentially disastrous consequences if not addressed promptly.
One user reported that their vinyl tubing lasted only a year before it needed to be replaced. The tubing became soft and jelly-like, and while it did not leak, it likely would have if left for much longer. Another user shared a similar experience, noting that their vinyl tubing became so soft that diesel fuel leaked through it, leaving a mess.
To avoid such issues, it is highly recommended to use fuel-rated hoses specifically designed for constant fuel use. These hoses will ensure a safe and reliable connection, preventing leaks and potential disasters. While fuel-rated hoses may be more expensive, the peace of mind and longevity they offer make them a wiser investment.
If you are unsure about the suitability of your current hose, inspect it regularly for any signs of deterioration or leaking. It is also advisable to keep extra fuel-rated hoses of various sizes in your vehicle, so you can make a timely replacement if needed. Remember, dealing with a broken fuel line in an emergency is far more costly and dangerous than investing in the right hose from the start.
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Frequently asked questions
No, it is not safe. Vinyl tubing will cause leaks and could burn your truck to the ground.
Vinyl tubing hardens and yellows quickly, especially when exposed to diesel fuel, causing it to become brittle and leaky.
Rubber fuel lines are more suitable for diesel fuel applications. Tygon hose is also recommended.
The lifespan of vinyl tubing for diesel fuel is short. Some users have reported leaks within days, while others have replaced the tubing after a year to avoid potential leaks.
Vinyl tubing is tempting because it is cheaper than chlorinated fuel lines. It is also useful for testing purposes and for checking for air bubbles in the fuel system.
