Kerosene in a Gas Tank: What REALLY Happens?! (Explained)

If you’re curious about kerosene, you probably see that it’s a lighter blend of diesel. Thus, you probably wonder if it has the potential to be a substitute for diesel. Or, you wonder what would happen if someone put such a liquid in your gas tank. So, you may ask:

If you put kerosene in a gas tank, what really happens? If you put kerosene in a gas tank, it can cause poor combustion and performance, producing a smoky exhaust. Kerosene might be a light blend of diesel. However, it’s not a good substitute or alternative to fuel. If you fill up your tank in kerosene, your engine won’t even likely start.

Of course, a small amount of kerosene mixed in an entire tank of fuel won’t likely cause any issue. However, the combustion of such may produce black smoke and may cause your engine to perform poorly. Thus, it would be best not to use such in your engine.

In this article, we’ll walk you through all the effects of kerosene if you fill your tank with it. This way, you’ll understand the risks and know how to deal with them if it ever happens.

Without further ado, let’s get into it!

Kerosene in a Gas Tank

What happens if you put kerosene into a gas tank?

If you put kerosene into a gas tank, you risk your engine with the potential harm and damage that kerosene can cause.

Although kerosene is a light blend of diesel, it doesn’t work well with engines. Thus, it can cause poor performance for your engine, and it can also create a smoky exhaust.

Moreover, if you fill your tank with kerosene, you can’t likely start it. If you have a gasoline-powered engine, you may destroy the injector system if you put too much kerosene in the gas tank.

Here are some of the short and long-term effects of putting kerosene into a gas tank.

Short term effects

The short-term effects of kerosene in a gas tank may vary depending on the amount you put inside it. For instance, a small amount of kerosene mixed into a tank-full of gasoline wouldn’t likely cause any issue.

However, you may experience poor engine performance as well as a smoky exhaust. The small amount of kerosene might not cause any harm, but it’s still not a good idea.

Long term effects

Suppose you leave your gas tank with remnants of kerosene. In that case, you can make your fuel contaminated, and it can be a cause of poor performance and eventual wearing down of your engine system.

Since kerosene isn’t a compatible substance in the engine, it won’t do any good to your vehicle, both in the long and short run.

Can kerosene in a gas tank damage an engine?

Kerosene in a gas tank can damage an engine. In addition, it can create devastating effects on your injector system if you put a lot.

In general, mixing your fuel with kerosene causes contamination in the entire system. Thus, it can lead your engine to stall and eventually shut down.

As the process goes on, the kerosene would cause a build-up of carbon deposits. Such damage is usually irreparable. 

For this reason, your engine may start losing power with frequent misfires and warning lights. Thus, it would be best to avoid such a thing from happening as soon as possible.

Will a car run off kerosene?

No, a car will not run off kerosene. While kerosene is a lighter diesel blend, it’s still not enough for vehicles as a substitute for fuel.

A simple mixture of kerosene and fuel can lead to contaminating the entire engine system. As a result, it will alter the overall performance and cause severe issues and problems for your vehicle. 

Since kerosene is a lighter blend of diesel, it won’t do well as a spark in the ignition engines. Thus, a tank filled with kerosene won’t likely start.

Of course, a small amount of kerosene mix in a full tank of gasoline won’t likely cause any misfires. However, it may create smoky exhaust due to poor combustion.

How much kerosene in a gas tank will ruin it?

If your tank has kerosene in it, even a tiny amount can contaminate an entire tank filled with gasoline. For example, suppose you continue to run your engine with fuel contaminated with kerosene, and you finished two fills of such. In that case, it can disable your engine in a short while.

A simple mixture of kerosene and fuel can lead to contaminating the entire engine system. As a result, it will alter the overall performance and cause severe issues and problems for your vehicle. 

Since kerosene is a lighter blend of diesel, it won’t do well as a spark in the ignition engines. Thus, a tank filled with kerosene won’t likely start. Thus, after two fills of kerosene-contaminated fuel, your vehicle won’t do well.

kerosene in gas tank

Can you tell if someone put kerosene in your gas tank?

Yes, you can tell if someone put kerosene in your gas tank. If it happens, the kerosene will mix in with the gasoline. As a result, the kerosene might produce poor combustion and a smokey exhaust when the engine starts and the fuel begins to burn.

Your car will create a lot of smoke due to poor combustion. If your engine is running and the exhaust produces a lot of smoke, you should turn it off and examine it. Another possibility is that if the kerosene is not burned, it will block the engine.

The kerosene would leave residues in your engine, which might cause it to clog. As a result, your engine will stall, eventually causing damage.

If you suspect someone has placed kerosene in your gas tank, turn it off and have it examined as soon as possible to avoid problems.

How to get the kerosene out of a gas tank?

If you discover that your gas tank contains kerosene, you must remove it immediately. It may, however, be a difficult task.

The first step is to turn off the engine and drain the gas tank. Later on, you’ll have to replace the gasoline filter.

It’s excellent if your gas tank has a gas cap or an entry from the trunk’s top. You’re allowed to peep inside if that’s the case. Some vehicles have it hidden behind the rear seat.

If this is the case, the kerosene can mix with the gasoline in the tank. Thus, you’ll have to drain the fuel out and replace it with a clean one.

Summary

So, if you put kerosene in a gas tank, what really happens? If you put kerosene in a gas tank, it can cause poor combustion and performance, producing a smoky exhaust. Kerosene might be a light blend of diesel. However, it’s not a good substitute or alternative to fuel. If you fill up your tank in kerosene, your engine won’t even likely start.

Of course, a small amount of kerosene mixed in an entire tank of fuel won’t likely cause any issue. However, the combustion of such may produce black smoke and may cause your engine to perform poorly. Thus, it would be best not to use such in your engine.

As always, keep in mind that kerosene is not a substitute for fuel, and it wouldn’t do any good to your engine if you put some in your tank.

Related:

Resources

Image credits – Canva

Share on:

My name is Hank, and I've been in the automotive industry for 27 years. I've been working in my own auto repair shop for the last 13 years, and now I want to help you here, on my blog. Let me know if you have any questions. Read more