Right now, rust inside fuel tank has become one of the biggest concerns among bikers. This issue is appearing widely in recent times and it is not limited to any specific brand or model. Almost every type or segment of motorcycle is being affected which is why bikers are seriously worried. 

Even though motorcycle manufacturers are replacing tanks under warranty but still the problem is returning for many riders. Rust not only damages the tank but also affects the fuel system which later leads to bigger mechanical issues. Today we will discuss this problem as a case study and explain possible causes and solutions.

Motorcycle Fuel Tank Rust Problem - Causes of Rust

There is a saying that iron does not easily get destroyed but iron destroys itself. Rust forms in a motorcycle fuel tank when metal reacts with water and oxygen. This oxidation changes the structure of the metal and causes gradual damage. The causes behind this rust can be divided into several parts.

1. Humidity

Bangladesh has a highly humid climate due to its geographical location. Because of humidity when a hot fuel tank cools down after a ride or when the environment stays cool during rain or winter condensation can form inside the tank. This moisture can create rust.

 Most bikers refill with a low fuel level such as 100-200 taka worth of fuel. This leaves a large empty space that allows more condensation.

2. Water entering the tank

During heavy rain or while washing the bike with high pressure even a small drop of water entering through the fuel cap can start rust formation.

Scientifically these two are the most common reasons. But then a question arises- Why did we not see this widespread rust problem in old motorcycle models? So, we should discuss the other reasons.

3. Fuel adulteration

Many fuel stations in Bangladesh sell low quality or adulterated fuel. This problem has increased recently. This can also be a major cause of rust formation. 

Some people believe ethanol mixed E20 fuel is being sold nowadays in Bangladesh but there is no proof of that yet. So E20 fuel cannot be blamed for the rust formation issue of our country.

4. Low quality raw materials used for tanks

Some people think companies are using lower grade metal for tanks which makes rust formation easily. This point is partly true but old bikes which are aged five to ten years did not face this issue. Yet the problem suddenly started appearing mostly in the last 1-1.5 years.

5. Damage to the anti-rust coating inside the tank

Another logical reason is the destruction of the tank’s anti rust coating due to different factors.

Since motorcycles are expensive it is very difficult for a biker to accept such issues. Rust does not only reduce the look or fuel capacity. It also attracts more dirt. Over time this dirty fuel enters the carburetor or injector and harms the engine along with spreading rust to other metal parts.

Solutions And Preventions

A few steps can be followed to prevent or solve this problem.

1) Always collect high quality octane from trusted stations and use octane boosters if needed.

2) Try to keep the fuel tank at least half full even if you cannot fill it completely. This reduces moisture formation.

3) Park the bike in a shaded place or under a cover.

4) Ensure wash water or rainwater never enters the tank.

5) During servicing check the tank remove all fuel clean it properly and dry it well under sunlight.

6) If rust has already formed you can use a mixture of white vinegar and baking soda inside the empty tank for twelve to twenty four hours to clean it. You can also take help from workshops that offer commercial tank rust cleaning.

7) Applying anti rust coating or using a fiber made fuel tank gives the best protection.

In the end we can say fuel tank rust is being seen in almost all types of bikes whether new or old. Whatever the cause may be bikers must take preventive steps on their own as much as possible.

For all motorcycle related news and guidance stay with BikeBD.