FAQ

Biodiesel refers to biofuel in particular diesel fuel made from biological material from vegetable oil or animal fat. Biodiesel can be used in different mixing ratios together with fossil diesel, but can also be used 100% pure. At Biofuel Express we have to kind of biodiesel HVO100 Renewable Diesel and B100 Biodiesel RME.

A well-to-wheel analysis is a defined life cycle analysis of a fuel’s path from the original processing source to combustion in the vehicle’s engine.

The Renewable Energy Directive (RED) is the EU’s legal framework for promoting renewable energy, including in transport. The current version, RED III (Directive (EU) 2023/2413), sets the EU’s renewable energy targets and the sustainability and greenhouse gas savings criteria that biofuels such as HVO100 and B100 must meet to count towards them. Read more about RED II and RED III.

HVO100 Renewable Diesel has a high cetane number (≥70), which gives efficient ignition and combustion, and it can be used in diesel vehicles approved for HVO (EN 15940). B100 Biodiesel RME meets the EN 14214 standard and can be used in vehicles approved for B100 by the manufacturer. Because RME has a lower energy content than fossil diesel, fuel consumption is typically slightly higher. In cold weather, use the winter grade of B100.

Fossil free fuel is made from renewable raw materials. Compared to fossil diesel, HVO100 Renewable Diesel reduces carbon emissions by up to 86%* and B100 Biodiesel RME by up to 67%**, based on RED III lifecycle data. In some countries, renewable fuels are taxed at a lower rate than fossil diesel, which can reduce fuel costs. Tax rules change often – contact us for the current situation in your country.

* Based on 2025 verified delivery data. Actual reduction per delivery ranges from 57% to 121% depending on feedstock composition and certified batch. Calculated per the RED III well-to-wheel life-cycle methodology using ISCC-certified mass balance allocation. Proof of Sustainability (PoS) documentation available on request.

** Based on 2025 verified delivery data. Actual reduction per delivery ranges from 57% to 67% depending on feedstock composition and certified batch. Calculated per the RED III well-to-wheel life-cycle methodology using ISCC-certified mass balance allocation. Proof of Sustainability (PoS) documentation available on request.

Our products can be used in most diesel engines, but you should always follow the engine manufacturer’s recommendations for each biofuel.

HVO100 Renewable Diesel is approved by the leading engine manufacturers.

When changing to 100% B100 Biodiesel RME, you should be particularly aware that the vehicle should be specially adapted to avoid operating problems.

B100 Biodiesel RME and HVO100 Renewable diesel are both fossil free alternatives to conventional diesel, but are produced by two different methods and follow two different fuel standards:

Biodiesel RME is based on plants (typically rapeseed), is a 1st generation biodiesel and meets the standard EN14214 for biodiesel.

HVO (Hydrotreated Vegetable Oil) is based on advanced raw materials such as residues and waste.
HVO is a 2nd generation biodiesel and meets the standard EN15940 for paraffin fuels.

1st generation biodiesel (B100 Biodiesel RME) is based on plants – usually rapeseed – and reduces carbon dioxide emissions by up to 67% compared to fossil diesel**, based on RED III lifecycle data.

2nd generation biodiesel (HVO100 Renewable Diesel) – also called advanced biodiesel – is based on residual products and waste – usually from slaughterhouses, fish factories and cooking oil – and reduces carbon dioxide emissions by up to 86% compared to fossil diesel*, based on RED III lifecycle data.

* Based on 2025 verified delivery data. Actual reduction per delivery ranges from 57% to 121% depending on feedstock composition and certified batch. Calculated per the RED III well-to-wheel life-cycle methodology using ISCC-certified mass balance allocation. Proof of Sustainability (PoS) documentation available on request.

** Based on 2025 verified delivery data. Actual reduction per delivery ranges from 57% to 67% depending on feedstock composition and certified batch. Calculated per the RED III well-to-wheel life-cycle methodology using ISCC-certified mass balance allocation. Proof of Sustainability (PoS) documentation available on request.

When converting to fossil free fuel, the storage tank and the vehicle tank must be drained completely, as these can contain free water. This is especially important if you have chosen B100 Biodiesel RME. If you have been driving on fossil diesel for a long time, we recommend ordering cleaning of the tank to avoid bacterial growth and operating problems.

Apply water finding paste to a dipstick and check if the paste becomes discoloured. Water finding paste can be purchased on various websites. Make sure that the gasket in the manway cover is whole and intact.

The price of B100 Biodiesel RME compared with regular diesel varies with the market. We send out list prices every week – see List prices.

In the production process of B100 Biodiesel RME Premium has methanol been used. Methanol can be both fossil and fossil-free. Biofuel Express uses 50% biomethanol as standard in the manufacturing process, to increase the share of biomass in the fuel. Fossil methanol constitutes a maximum of 0.02% of the final product of the fuel, whereas the biodiesel standard EN14214 imposes a maximum value of 0.2% methanol. B100 Biodiesel RME is also offered 100% fossil-free, where pure biomethanol has been used. You are welcome to contact us for further information about the product.

It is possible to use 100% B100 Biodiesel RME Premium in all RME-adapted diesel engines. Our biodiesel is specially developed for 100% operation, manufactured through a Swedish-patented after-treatment process. This means that the biodiesel is better adapted to Nordic winter conditions.

Up to 67% of CO2 is saved compared to regular diesel** by changing to B100 Biodiesel.

** Based on 2025 verified delivery data. Actual reduction per delivery ranges from 57% to 67% depending on feedstock composition and certified batch. Calculated per the RED III well-to-wheel life-cycle methodology using ISCC-certified mass balance allocation. Proof of Sustainability (PoS) documentation available on request.

Many of the leading engine manufacturers, such as Scania, Volvo and MAN, offer RME-adapted engines. Contact us for information regarding your vehicle fleet.

B100 Biodiesel RME complies with standard EN14214 for biodiesel.

The collective name for biodiesel, produced by esterification, is FAME and stands for Fatty Acid Mehtyl Ester. FAME can be made from most vegetable oils, of which rapeseed oil has the least proportion of saturated fatty acids and is therefore most suitable for cold climates. Biodiesel, which is produced from rapeseed oil, is called rapeseed methyl ester, or RME. Read more about B100 Biodiesel RME.

Biofuel Express’ B100 Biodiesel RME Premium is made from rapeseed oil.

Although B100 Biodiesel RME is more sensitive to cold temperatures than regular diesel or HVO, the winter grade can be used down to –20 °C, which makes it suitable for Nordic winter conditions.

You can refuel our after-treated B100 Biodiesel RME at Biofuel Express stations in Denmark and Sweden. See which stations offer B100 on our station map.

Biofuel Express also offers direct delivery (bulk) of B100 Biodiesel RME to your own tank.

HVO100 Renewable Diesel is biodiesel, as it is diesel made from biological material. However, it differs from 1st generation biodiesel (B100 Biodiesel RME), which is made from vegetable material, where HVO100 Renewable Diesel is primarily made from residues and waste.

HVO100 Renewable Diesel usually costs more than regular diesel, because it is more expensive to produce. The difference varies with the market. We send out list prices every week – see List prices.

Hydrogen, which is partly derived from fossil natural gas, is used in the production of HVO100. Hydrogen itself should not be defined as a raw material but is used in the chemical process to remove oxygen from the fatty acids that make up the renewable raw material base. There can therefore be traces of fossil origin in the final product itself, but the share is very small – less than 1%. You are welcome to contact us for further information about the product.

Yes – no problem!

HVO100 Renewable Diesel can be used in all diesel engines as it has the same chemical composition as conventional diesel. However, one must follow the engine manufacturer’s recommendations for each fuel.

Contact us and we will help you with what applies to your vehicle fleet.

Up to 86% of CO2 is saved compared to regular diesel* by changing to HVO100 Renewable Diesel.

* Based on 2025 verified delivery data. Actual reduction per delivery ranges from 57% to 121% depending on feedstock composition and certified batch. Calculated per the RED III well-to-wheel life-cycle methodology using ISCC-certified mass balance allocation. Proof of Sustainability (PoS) documentation available on request.

HVO100 Renewable Diesel is made from renewable raw materials and has up to 86% lower CO2 emissions compared to fossil diesel*. In addition, HVO is odourless and emits fewer local particles than regular diesel.

“HVO” is a chemical copy of regular diesel that works at least as well as conventional diesel. HVO100 Renewable Diesel has a density lower than MK3 Diesel. On the other hand, the cetane number (diesel oil octane number) is better for HVO100 Renewable Diesel than for MK3. There is no difference to your fuel economy.

* Based on 2025 verified delivery data. Actual reduction per delivery ranges from 57% to 121% depending on feedstock composition and certified batch. Calculated per the RED III well-to-wheel life-cycle methodology using ISCC-certified mass balance allocation. Proof of Sustainability (PoS) documentation available on request.

Yes, you can. HVO100 Renewable Diesel is fully mixable with regular diesel.

Biofuel Express’ HVO100 Renewable Diesel is made of about 10 different raw materials, including animal fat, waste from the food industry, recycled cooking oil, waste from the fish industry and residues from food oil production. These raw materials are classified as residual products and waste, and the fuel is supplied under ISCC certification, documenting that it meets the sustainability criteria of the EU Renewable Energy Directive (RED III). You can read more about the feedstock here.

Neste MY Renewable Diesel is Neste’s brand name for HVO100 renewable diesel, produced by Neste. It is made by hydrotreating oils, waste and residues. The “100” in HVO100 means the fuel is 100% HVO. You can mix it with fossil diesel in your tank without any problems. The HVO100 that Biofuel Express supplies has a cloud point of –22 °C.

You can refuel HVO100 Renewable Diesel at Biofuel Express stations in Denmark and Sweden. See which stations offer HVO100 on our station map.

Biofuel Express also offers direct delivery (bulk) of HVO100 to your own tank.