LPG at a gas station - what it is and how to use it: a detailed guide for motorists

Have you ever seen a separate column at a gas station with the inscription LPG and wondered what it is? Or maybe you're interested in gas fuel as an alternative to gasoline, but terms like propane-butane mixture or HBO seem too complicated? This article will help you understand the topic without technical intricacies.

LPG is liquefied petroleum gas, which is used as fuel for cars with gas-cylinder equipment (LPG). At gas stations it is often called simply “gas,” but it is not the same gas as in household stoves (although they are similar in composition). Unlike gasoline or diesel, LPG is cheaper, more environmentally friendly and in some cases even better for the engine. But there are also nuances: not every car can run on such fuel, and gas stations with LPG are less common than usual.

In this article we will explain:

• 🔹 What is LPG and how does it differ from gasoline/diesel
• 🔹 How does LPG equipment work in a car?
• 🔹 Pros and cons of switching to gas fuel
• 🔹 How to refuel with LPG and what to do if you run out of gas on the road
• 🔹 Myths and real facts about gas safety in a car

If you are just thinking about switching to gas or just want to understand what is being poured into the tank at that very “gas water heater”, read on. We will do without formulas and complex terms - only practice and useful tips.

What is LPG: understanding the terms

Abbreviation LPG stands for liquefied petroleum gas. It is a mixture of two main components:

• 🔥 Propane (C₃H₈) — ensures stable combustion, especially in cold weather.
• 🔥 Butane (C₄H₁₀) - cheaper than propane, but evaporates worse at sub-zero temperatures.

At gas stations you can find different LPG markings:

• 📌 PA (automotive propane) - almost pure propane (90%+), suitable for winter.
• 📌 PBA (propane-butane for automobiles) - a mixture with different ratios (usually 60/40 or 50/50).
• 📌 Technical butane — rarely used for cars, more often in everyday life.

Important: In Russia, only LPG with a propane content of at least 60% is allowed for cars (according to GOST R 52087-2018). This ensures that the car will start even at -20°C. Butane mixtures with low propane content can cause problems in winter.

How does LPG get into the tank? At the gas station, gas is stored in a liquid state under pressure (~10-15 atmospheres). When you fill up, the liquid enters the tank of your car, where the later evaporates and is supplied to the engine in gaseous form. This is a key difference from gasoline, which burns in the liquid phase.

How does LPG equipment work in a car?

To drive on LPG, the car must be equipped gas cylinder equipment (GBO). This is a set of devices that allows the engine to run on gas instead of gasoline (or in parallel with it). Let's figure out what HBO consists of and how it functions.

Main components of HBO:

Component	Purpose	Where is it installed?
Gas cylinder	Stores liquefied gas under pressure	In the trunk or instead of a spare tire
Multivalve	Controls gas filling and supply, prevents leaks	On the cylinder
Evaporator-reducer	Converts liquid gas to vapor and reduces pressure	Under the hood, next to the engine
Injectors	Inject gas into the intake manifold or cylinders	Under the hood, next to the petrol injectors
Electronic control unit (ECU)	Controls petrol/gas switching and fuel dosage	In the cabin or under the hood

How it works in practice:

1. You turn on the ignition - the car starts at gasoline (this is necessary to warm up the engine).
2. When the coolant temperature reaches ~40°C, the ECU automatically switches power to gas.
3. Gas from the cylinder in the liquid phase enters reducer-evaporator, where it turns into steam.
4. Gas injectors inject fuel into the intake manifold (or directly into the cylinders in modern systems).
5. When you press the gas pedal, the ECU adjusts the fuel supply, as in a gasoline system.

Modern LPG systems (4th and 5th generations) are practically no different in dynamics from gasoline ones. Old generations (1st or 2nd) could be “stupid” when overclocking, but today this is not relevant.

What happens if the gas runs out while driving?

If the gas in the cylinder runs out, the system automatically switches to gasoline. You will hear a beep (or see an indicator on the dashboard), but the car will not stall. The main thing is not to ignore the warning and refuel at the first opportunity, so as not to drive for a long time on an empty tank (this can damage the gearbox).

Pros and cons of LPG for a car: is it worth switching to gas?

The main question that worries drivers: Is it profitable to drive on gas? The answer depends on your driving style, mileage and vehicle type. Let's look at all the pros and cons.

Advantages of LPG:

• 💰 Saving on fuel — gas is 30-50% cheaper than gasoline. For long mileages (from 20 thousand km/year), LPG pays for itself in 1-2 years.
• 🌱 Environmental friendliness — CO₂ emissions are 15-20% lower compared to gasoline. In some regions they give tax breaks for this.
• 🛠️ Gentle mode for the engine — gas burns more softly, less carbon deposits on valves and pistons. The oil retains its properties longer.
• 🔄 Reserve fuel tank — when the gas cylinder is empty, the car automatically switches to gasoline.

Disadvantages and nuances:

• ⚠️ Additional costs for installing gas equipment — high-quality 4th generation equipment will cost 30-60 thousand rubles (depending on the machine).
• ⚠️ Lost trunk space — the cylinder takes up space (especially in hatchbacks). In some cases, you have to sacrifice a spare tire.
• ⚠️ Less mileage on one tank - a gas cylinder usually holds the equivalent of 30-50 liters of gasoline. You'll have to fill up more often.
• ⚠️ Limitations for some engines - turbocharged engines, engines with direct injection (for example, TSI or GDI) require expensive 5th generation HBO.

Important point: gas is not suitable for older carburetor cars (only for injection ones). It is also not recommended to install LPG on cars with a mileage of more than 200 thousand km without preliminary engine diagnostics - worn valves or piston rings may not withstand different combustion temperatures.

How to refuel with LPG: step-by-step instructions for beginners

If you've never filled up with gas, the process may seem daunting. In fact, everything is simple - the main thing is to know a few rules. Here step-by-step algorithm:

Turn off the engine and put the car on the handbrake

Make sure the cylinder multi-valve is open (lever or valve in the "ON" position)

Check that there is no visible damage to the filling nozzle

Prepare your money/card - at some gas stations gas is sold only in cash-->

Refilling process:

1. Drive up to the gas pump only with engine off. Many gas stations have a separate area for gas vehicles - follow the markings.
2. Open the gas cylinder hatch (usually in the trunk or under the rear bumper). On some cars, the hatch opens from the passenger compartment (a lever next to the driver's seat).
3. Put it on refueling nozzle to the cylinder fitting. It should click into place with a characteristic click. Don't use force! If it doesn’t work, try turning the gun or check if the multi-valve is open.
4. Tell the operator how many liters are needed (or until the tank is full). LPG refueling automatic — the column will turn off itself when the cylinder is 80% full (this is a safety requirement).
5. After refueling, carefully remove the gun (a little gas may come out - this is normal) and close the hatch.

Important rules:

• 🚨 Don't smoke and do not use an open flame near a gas water heater (even if you are “very careful”).
• 🚨 Don't refuelif the cylinder is damaged or rust is visible on the fitting.
• 🚨 If after refueling you smell gas - don't start the car, check the tightness of the connections.

How much gas does the cylinder hold? The volume is indicated in liters, but it is usually filled to 80% (for example, ~40 liters of gas fit into a 50-liter cylinder). This is due to the fact that liquid gas expands when heated.

What to do if you run out of gas on the road: emergency measures

One of the most common problems for newbies is unexpected end of gas on the way. Fortunately, modern gas systems are designed so that the car automatically switches to gasoline. But what to do if there is no gasoline either, and the gas station is far away?

Algorithm of actions:

1. Don't panic - you have it reserve gasoline (if the cylinder is empty, the system should have switched automatically). Check if the "gasoline" indicator on the instrument panel is on.
2. If the car stalls, try starting it manually on gasoline. To do this:
• 🔧 Find the fuel switch button (usually on the dashboard or under the steering wheel).
• 🔧 Move it to position "Gasoline" (or "Petrol").
• 🔧 Try to start the car.

If there is no gasoline either, there are two options left:

• 🚗 Ask someone to give you a ride to the gas station (or call a tow truck).
• 🛢️ Buy a can of gasoline (if possible). You cannot refill gas from a canister!

How to avoid this situation:

• 📌 Follow gas level on the dashboard (usually there is a separate indicator).
• 📌 Refuel when there are ~10 liters left in the tank.
• 📌 Always keep it in the tank at least 5-10 liters of gasoline for an emergency.
• 📌 Install a mobile application with a map of gas stations (for example, Gazpromneft-Gaz or Yandex Maps with filter "SUG").

Is it possible to mix different types of gas?

Yes, you can refuel with LPG from different manufacturers - the propane-butane mixture is standardized. However, it is not recommended to mix winter (with a high propane content) and summer (with a higher proportion of butane) gas in one cylinder - this can lead to unstable engine operation.

Myths and real facts about gas safety in cars

Many drivers are afraid to switch to gas because myths about its danger. Let's figure out what's true and what's fiction.

Myth 1: “A gas-powered car explodes at the slightest spark”

⚠️ Attention: Modern gas cylinders are made of steel 3-4 mm thick and are tested for impact resistance. They can withstand pressures of up to 60 atmospheres (working - 10-15). Less likely to explode than a gas tank! In addition, gas is lighter than air - when there is a leak, it evaporates rather than accumulating under the car.

Myth 2: "Gas spoils the engine"

On the contrary, gas burns cleaner than gasoline — no carbon deposits on the spark plugs, less deposits in the combustion chamber. But there are nuances:

• 🔧 If the HBO is installed incorrectly (for example, there is no ignition correction), the valves may burn out.
• 🔧 Gas dries the oil - it needs to be changed more often (every 10 thousand km instead of 15).

Myth 3: “The car loses power on gas”

In older systems (1-2 generations) this was true, but HBO 4th and 5th generations practically not inferior to gasoline in terms of dynamics. The difference in power is no more than 2-3%.

Myth 4: “The car won’t start on gas in winter”

This is only relevant for butane mixtures with low propane content. Modern winter LPG (with 90% propane) allows starting even at –25°C. The main thing is not to refuel with summer mixture in winter!

Myth 5: “Gas cars cannot be parked in underground parking lots”

⚠️ Attention: According to Russian standards (SP 4.13130.2013), gas vehicles allowed Park in underground parking lots if they meet the fire and explosion safety class. The ban applies only to cars with gas leaks or faulty HBO. In Europe and the USA there are no such restrictions.

Conclusion: gas is no more dangerous than gasoline if the equipment is installed by professionals and undergoes regular maintenance (every 10-15 thousand km).

How much does it cost to install gas equipment and when will it pay off?

Installation price gas equipment depends on the generation of the system, engine type and car make. Let's look at the numbers.

Cost of HBO (2026, average prices in Russia):

Generation HBO	Engine type	Cost (RUB)	Payback (with a mileage of 20 thousand km/year)
2nd generation	Carburetor/injector up to 2000	20 000 — 35 000	1-1.5 years
4th generation	Injector (distributed injection)	35 000 — 55 000	1.5-2 years
5th generation	Direct injection (TSI, GDI)	60 000 — 100 000	2-3 years

What affects the price:

• 💎 Cylinder type - toroidal (instead of a spare wheel) is cheaper than cylindrical.
• 💎 Tube material - copper ones are more expensive than plastic ones, but more reliable.
• 💎 Equipment brand — Lovato, BRC or Digitronic more expensive than their Chinese counterparts, but last longer.
• 💎 Additional options - for example, heating the gearbox for winter (+5-10 thousand rubles).

When will HBO pay for itself?

Approximate calculation for a car with a mileage of 20 thousand km/year:

• 📉 Average gasoline consumption is 10 l/100 km → 2000 l per year.
• 📉 Average gas consumption - 11 l/100 km (10% more) → 2200 l per year.
• 📉 The price of AI-95 gasoline is 50 rubles/l → 100,000 rubles/year.
• 📉 LPG price - 25 rub./l → 55,000 rub./year.
• 📉 Savings — 45,000 rub./year.

If HBO costs 40,000 rubles, it will pay for itself in less than a year. But don't forget about additional costs:

• 🔧 Maintenance (filter replacement) - 1,500 rubles/10 thousand km.
• 🔧 Replacement of gas filter - 500 rubles/15 thousand km.
• 🔧 Leak testing - 1,000 rubles/year.

Is it profitable to install HBO on a new car? If you plan to drive it for more than 3-5 years, yes. For used cars (especially those with mileage >150 thousand km), first check the condition of the engine.

FAQ: Frequently asked questions about LPG at gas stations

❓ Is it possible to refuel with gas at any gas station?

No, not just any one. LPG is sold only at specialized gas stations (usually with the sign “Gas” or “Propane-butane”). At ordinary gas stations (Lukoil, Rosneft, etc.) there may be a separate gas water heater, but not always. Before traveling, check the availability of LPG on the maps (for example, in Yandex.Maps or 2GIS).

❓ Why does the car drive poorly after filling gas?

The reasons may be different:

• 🔧 Poor quality gas - if there is too much butane in the mixture, it does not evaporate well in winter. Solution: fill up with propane (winter mixture).
• 🔧 Clogged filter — gas filters need to be changed every 10-15 thousand km.
• 🔧 Incorrect HBO settings — diagnostics are required (the ECU may need to be reconfigured).

If the problem appears immediately after refueling, try switching to gasoline and driving 5-10 km - sometimes this helps to “blow out” the system.

❓ Is it possible to install HBO on a diesel car?

Technically you can, but it is difficult and expensive. Diesel engines operate on a different principle (compression ignition rather than spark), so gas requires:

• 🔧 Installation gas-diesel system (GBO + diesel simultaneously).
• 🔧 Replacing injectors and adjusting the ECU.
• 🔧 Use of special gas with cetane number (for example, methane, not propane-butane).

The cost of such re-equipment is from 150 thousand rubles, and the savings are minimal. It is more profitable to use for diesel engines biofuel or GTL diesel.

❓ How to understand that there is little gas in the cylinder?

Verification methods:

• 📌 Look at gas level indicator on the instrument panel (if equipped).
• 📌 Weigh the cylinder - the weight of the empty cylinder is indicated on it (for example, 20 kg). If the weight is 10-15 kg more, there is still gas there.
• 📌 Listen to the sound - if you shake the cylinder, the liquid gas will “gurgle.”

Important: do not rely on “feelings” - it is better to refuel in advance, when there are ~10 liters left in the tank.

❓ Do I need to register HBO with the traffic police?

Yes, necessarily! Since 2019, the installation of LPG is considered a change in the design of the car. After installation you need:

1. Get declaration from the installer (that the equipment is certified).
2. Pass technical expertise at an accredited center.
3. Submit documents to the traffic police to make changes to the PTS.

Penalty for unregistered HBO - 500 rub. (under Article 12.5 of the Administrative Code), but the main problem is possible difficulties when selling a car or passing a technical inspection.