Why choose GERHON? | Shifting from "occasional" fuel additives to "optimizing every tank"

There are many fuel additives on the market.

Some cost around 1,000 yen. There are also famous products that cost around 2,000 yen.

Among them, GERHON costs 5,500 yen for 200mL.

Looking only at the price, it is not cheap.

"Why go out of your way to choose GERHON?"

If you don't understand this point, I don't think there is any need to buy it.

Conversely, I want it to be used by those who understand the philosophy behind its creation, how it differs from general fuel additives, and who feel it fits their usage style once they have that understanding.

This article will focus only on that.

GERHON is not a product for "cleaning after it gets dirty"

When people think of fuel additives, many products come to mind that "clean injectors," "remove dirt from the combustion chamber," or "remove deposits."

That has its own meaning. Cleaning something that has accumulated dirt. It's an easy concept to understand.

GERHON is a little different.

What we have in mind is not to "do something after it gets dirty," but to "maintain the condition on a daily basis starting from the fuel you use every day."

That is why GERHON is not designed to be added all at once every few thousand kilometers. You use a small amount every time according to the amount of fuel you refuel.

20mL for a 40L refuel.

You keep doing this.

We call this usage method "Fuel Conditioning."

You don't need to think about it in a difficult way. Changing the oil, checking tire pressure, washing the car—it is the same idea of "keeping your fuel in good condition every day."

5,500 yen alone looks expensive. But you can use 200mL about 10 times

GERHON for gasoline 200mL is 5,500 yen.

If you only look at this number, it feels expensive.

However, GERHON is not a product that you use up in one go.

The specified amount is 0.5mL per 1L of fuel. For a 40L refuel, it is 20mL.

Of course, you don't necessarily add general fuel additives every time.

That's why I won't simply say "GERHON is cheaper." Because what we are comparing is slightly different.

General detergent additives are "add one bottle when needed." GERHON is "use a small amount every time."

This is what's different.

Why use it that way?

An engine runs by burning fuel. That's a matter of course.

But when we think about car maintenance, we focus on engine oil, plugs, filters, tires, and the battery. Yet, we rarely think about the fuel itself that enters the engine every time.

That is what GERHON is looking at.

You add fuel. You burn it. You add fuel again. A car runs by repeating this thousands and tens of thousands of times.

If so, "Isn't maintaining the fuel itself a part of daily maintenance?"

The concept of GERHON begins there.

GERHON is not a product that suddenly appeared in 2026

What we are currently selling is a new series called GERHON Fuel Conditioning.

For gasoline. For diesel. For kerosene. We have separated it for each fuel type used.

However, GERHON itself is not a new product.

The predecessor, "GERHON 3+," has been sold for many years. Evaluations of the old product have also accumulated on Amazon and automotive social media.

Since it is an old product, we do not replace those evaluations with product reviews for the current GERHON. Because they are different products.

However, "GERHON as a product did not suddenly appear yesterday."

There are customers who have used it for many years, and that has led to the current GERHON. I want to properly preserve this history.

I don't want to sell it just on feeling. So we are also releasing past test data

Products like this tend to become stories of "it got better after putting it in" or "it felt somehow different."

Of course, what people who actually used it feel is important. But that alone is weak.

At NEXT SCIENCE, we also publish test materials conducted on past GERHON products.

For example, for gasoline, a 10-mode test on the same vehicle in 1985. Used oil analysis in 1993.

For diesel, a continuous diesel engine operation test. Vehicle usage records in logistics. In 2026, we also conducted a clogging point test based on JIS K 2288 for the diesel version.

There is one thing I don't want you to misunderstand here.

The numbers changed in old tests. Therefore, if you use the current GERHON, you will definitely get the same results. I won't say such things.

The vehicles are different. The fuel is different. Driving conditions are different. The results will change.

That is precisely why I do not say "I took only the good numbers and they are the same now," but rather publish the test conditions as well.

It is for you to look at as judgment material.

View test materials for gasoline
View tests and field records for diesel
View 2026 JIS test

These are the people we recommend GERHON to

I don't think it's a necessary product for everyone.

For example, you want to drive your favorite car for as long as possible. You want to do what you can normally, not after the condition gets worse. You want to consider conditions from the fuel side as well, just like oil changes and tire pressure management.

I think it fits such people.

On the contrary, for those who say "I want to make it dramatically faster the moment I put it in," GERHON is a little different.

It is not a product that guarantees a horsepower increase. It is not a product that fixes broken parts.

The warning light is on. There is an abnormal noise. There is a fuel leak. The engine condition is clearly bad.

In those cases, maintenance comes first. It's not a matter of adding GERHON.

First, 200mL is enough

If you use it for the first time, you don't need to buy 1L.

First 200mL. It is 5,500 yen.

About 10 uses for 40L refueling. About 550 yen per use.

Try using it on your own car. If you think it makes sense to continue, consider 1L at that point.

1L is 14,960 yen. About 50 uses for 40L refueling. About 299 yen per use.

I don't expect you to buy a large quantity from the beginning.

Verify it with your own car. I think that is fine.

Instead of "buying fuel additives," it's "changing how you handle fuel"

This is what I want to convey most with GERHON.

Add it only when some trouble occurs. Wash it after driving some thousands of kilometers. That is one way to do it.

GERHON is the approach of "considering the fuel you use daily as part of maintenance."

Therefore,

Clean after it gets dirty. Before that, keep it in order starting with the fuel.

This is the philosophy of GERHON.

View GERHON by fuel

• For Gasoline — 200mL 5,500 yen | Approx. 400L worth, 1L 14,960 yen | Approx. 2,000L worth
• For Diesel — 200mL 5,500 yen | Approx. 400L worth, 1L 14,960 yen | Approx. 2,000L worth
• For Kerosene — 200mL 5,500 yen | Approx. 400L worth, 1L 14,960 yen | Approx. 2,000L worth

The specified amount for all is 0.5mL per 1L of fuel.