Best Oil Additives of 2026

Last updated on 02/03/2026
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1
HYDRA VULCAN Heating oil additive, 500ml treats up to 2,500 litres, additive for kerosene, additive for heating oil, heating oil for home additive, additive for kerosene
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HYDRA VULCAN Heating oil additive, 500ml treats up to 2,500 litres, additive for kerosene, additive for heating oil, heating oil for home additive, additive for kerosene

HYDRA
Why we love it
  • Cleans injectors and burners.
  • Removes carbon and soot.
  • Reduces fuel consumption.
Main Highlights
  • ADDITIVE FOR HEATING OIL & KEROSENE… Contains heavy duty detergents designed for heating oils and kerosene used as boiler fuel, will rapidly clean injectors and burners down to molecular levels.
  • ADDITIVE FOR KEROSENE… Removes heavy build-up of carbon and soot deposits from all surfaces in the boiler fuel system.
  • HEATING OIL ADDITIVE… Stabilises fuel by dissolving sludge in fuel tanks and Hydra Vulcan's dispersants help prevent it from reforming.
  • MAKES PREMIUM KEROSENE… Turns normal heating oil kerosene / heating oil into premium kerosene / premium domestic heating oil this helps to reduce fuel consumption.
  • USE WITH ALL DOMESTIC HEATING OIL… For all boilers 500ml treats Up To 2,500 litre
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9.9
Exceptional
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9.9
Exceptional
HYDRA

HYDRA VULCAN Heating oil additive, 500ml treats up to 2,500 litres, additive for kerosene, additive for heating oil, heating oil for home additive, additive for kerosene

Why we love it
  • Cleans injectors and burners.
  • Removes carbon and soot.
  • Reduces fuel consumption.
Main Highlights
  • ADDITIVE FOR HEATING OIL & KEROSENE… Contains heavy duty detergents designed for heating oils and kerosene used as boiler fuel, will rapidly clean injectors and burners down to molecular levels.
  • ADDITIVE FOR KEROSENE… Removes heavy build-up of carbon and soot deposits from all surfaces in the boiler fuel system.
  • HEATING OIL ADDITIVE… Stabilises fuel by dissolving sludge in fuel tanks and Hydra Vulcan's dispersants help prevent it from reforming.
  • MAKES PREMIUM KEROSENE… Turns normal heating oil kerosene / heating oil into premium kerosene / premium domestic heating oil this helps to reduce fuel consumption.
  • USE WITH ALL DOMESTIC HEATING OIL… For all boilers 500ml treats Up To 2,500 litre
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Value for Money
2
Lucas Oil 10118 High Mileage Oil Stabilizer - 1 Quart

Lucas Oil 10118 High Mileage Oil Stabilizer - 1 Quart

Lucas Oil
Why we love it
  • Fights off engine sludge effectively.
  • Minimizes wear on engine components.
  • Reduces noise and emissions significantly.
Main Highlights
  • Excellent at fighting off sludge
  • Lubricates all internal parts to minimize wear in any engine
  • Raises oil pressure
  • Eliminates the noise, emissions and oil consumption associated with worn engine
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9.7
Exceptional
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9.7
Exceptional
Lucas Oil

Lucas Oil 10118 High Mileage Oil Stabilizer - 1 Quart

Why we love it
  • Fights off engine sludge effectively.
  • Minimizes wear on engine components.
  • Reduces noise and emissions significantly.
Main Highlights
  • Excellent at fighting off sludge
  • Lubricates all internal parts to minimize wear in any engine
  • Raises oil pressure
  • Eliminates the noise, emissions and oil consumption associated with worn engine
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3
LIQUI MOLY Cera Tec 3721 I Ceramic Wear & Tear Protection for Petrol & Diesel Engines I Smoother Engine Performance, Less Friction & Lower Fuel Consumption I Ceramic Additive 300 ml Pack of 1
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LIQUI MOLY Cera Tec 3721 I Ceramic Wear & Tear Protection for Petrol & Diesel Engines I Smoother Engine Performance, Less Friction & Lower Fuel Consumption I Ceramic Additive 300 ml Pack of 1

Liqui Moly
12% Off
Why we love it
  • Smoother engine performance guaranteed.
  • Certified effectiveness with TÜV Thüringen.
  • Extends engine's lifespan significantly.
Main Highlights
  • SMOOTHER ENGINE PERFORMANCE FROM VERY FIRST USE: An engine additive formulated with high-tech ceramic compounds, high thermal resilience. Additive ensures smoother-running engine, extending the engine’s lifespan. Can be used with manual & automatic transmissions. Not suitable for use with wet clutches.
  • LOWER FUEL CONSUMPTION and diminished emission of pollutants due to smoother engine operation.
  • EASY TO ADD DURING OIL CHANGES: The 300 ml bottle is sufficient for up to 5 liters of engine oil. Shake well before use and add to fresh oil. Can be mixed with all gear & engine oils on the market. Long-lasting performance, up to 50,000 km.
  • CERTIFIED EFFECTIVENESS proven by TÜV Thüringen: Chemical components in Cera Tec smooth out rough surfaces, the ceramic particles fill in uneven surface imperfections. Prevents direct contact of all metal parts, reducing friction and wear & tear. Turbo & Cat tested.
  • EVERYTHING THAT DRIVES WORKS BETTER WITH LIQUI MOLY: We manufacture over 4,000 products: engine oils, additives, vehicle care, chemical servicing and repair, adhesives and sealing products. Our products are currently distributed to over 150 countries worldwide. They are popular everywhere, ensuring a superior driving experience and improved engine performance.
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9.5
Superb
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9.5
Superb
Liqui Moly

LIQUI MOLY Cera Tec 3721 I Ceramic Wear & Tear Protection for Petrol & Diesel Engines I Smoother Engine Performance, Less Friction & Lower Fuel Consumption I Ceramic Additive 300 ml Pack of 1

12% Off
Why we love it
  • Smoother engine performance guaranteed.
  • Certified effectiveness with TÜV Thüringen.
  • Extends engine's lifespan significantly.
Main Highlights
  • SMOOTHER ENGINE PERFORMANCE FROM VERY FIRST USE: An engine additive formulated with high-tech ceramic compounds, high thermal resilience. Additive ensures smoother-running engine, extending the engine’s lifespan. Can be used with manual & automatic transmissions. Not suitable for use with wet clutches.
  • LOWER FUEL CONSUMPTION and diminished emission of pollutants due to smoother engine operation.
  • EASY TO ADD DURING OIL CHANGES: The 300 ml bottle is sufficient for up to 5 liters of engine oil. Shake well before use and add to fresh oil. Can be mixed with all gear & engine oils on the market. Long-lasting performance, up to 50,000 km.
  • CERTIFIED EFFECTIVENESS proven by TÜV Thüringen: Chemical components in Cera Tec smooth out rough surfaces, the ceramic particles fill in uneven surface imperfections. Prevents direct contact of all metal parts, reducing friction and wear & tear. Turbo & Cat tested.
  • EVERYTHING THAT DRIVES WORKS BETTER WITH LIQUI MOLY: We manufacture over 4,000 products: engine oils, additives, vehicle care, chemical servicing and repair, adhesives and sealing products. Our products are currently distributed to over 150 countries worldwide. They are popular everywhere, ensuring a superior driving experience and improved engine performance.
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4
Lucas Oil 10001 Heavy Duty Oil Stabiliser, 946 ml
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Lucas Oil 10001 Heavy Duty Oil Stabiliser, 946 ml

Lucas Oil
16% Off
Why we love it
  • Increases oil life significantly.
  • Minimizes oil consumption.
  • Prevents dry starts.
Main Highlights
  • Increases oil life at least 50% longer
  • Reduces oil consumption
  • Eliminates dry starts
Show More
9.3
Superb
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9.3
Superb
Lucas Oil

Lucas Oil 10001 Heavy Duty Oil Stabiliser, 946 ml

16% Off
Why we love it
  • Increases oil life significantly.
  • Minimizes oil consumption.
  • Prevents dry starts.
Main Highlights
  • Increases oil life at least 50% longer
  • Reduces oil consumption
  • Eliminates dry starts
Show More
5
ZX1 EXTRALUBE MICRO OIL METAL TREATMENT 250ml
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ZX1 EXTRALUBE MICRO OIL METAL TREATMENT 250ml

MICRO ZX1
Why we love it
  • Protects metal surfaces long-term.
  • Eliminates friction almost entirely.
  • Improves fuel economy consistently.
Main Highlights
  • Advanced Friction Eliminator: Unlike traditional oil additives for petrol engines, ZX1 oil treatment doesn't alter your oil. It bonds to metal surfaces, smoothing out the surface
  • Enhanced Engine Performance: Our ZX1 oil treatment bonds to metal surfaces, reducing friction and wear. This results in increased MPG and lower emissions, setting it apart from conventional oil additive.
  • Long-Term Metal Protection: Protects engine surfaces for up to 25,000 miles by smoothing metal surfaces. EXTRALUBE ZX1 ensures excellent cold start protection and anti-wear performance.
  • Superior Cold Start Protection: EXTRALUBE ZX1 Micro Oil Metal Treatment provides immediate protection and smooths surfaces for better oil flow.
  • Effortless Application: ZX1 oil treatment simply uses the oil to reach bare metal surfaces, offering unparalleled protection without altering oil properties.
Show More
9.1
Superb
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9.1
Superb
MICRO ZX1

ZX1 EXTRALUBE MICRO OIL METAL TREATMENT 250ml

Why we love it
  • Protects metal surfaces long-term.
  • Eliminates friction almost entirely.
  • Improves fuel economy consistently.
Main Highlights
  • Advanced Friction Eliminator: Unlike traditional oil additives for petrol engines, ZX1 oil treatment doesn't alter your oil. It bonds to metal surfaces, smoothing out the surface
  • Enhanced Engine Performance: Our ZX1 oil treatment bonds to metal surfaces, reducing friction and wear. This results in increased MPG and lower emissions, setting it apart from conventional oil additive.
  • Long-Term Metal Protection: Protects engine surfaces for up to 25,000 miles by smoothing metal surfaces. EXTRALUBE ZX1 ensures excellent cold start protection and anti-wear performance.
  • Superior Cold Start Protection: EXTRALUBE ZX1 Micro Oil Metal Treatment provides immediate protection and smooths surfaces for better oil flow.
  • Effortless Application: ZX1 oil treatment simply uses the oil to reach bare metal surfaces, offering unparalleled protection without altering oil properties.
Show More
6
HYDRA VULCAN Heating oil additive, 250ml treats up to 1,250 litres, additive for kerosene, additive for heating oil, heating oil for home additive, additive for kerosene
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HYDRA VULCAN Heating oil additive, 250ml treats up to 1,250 litres, additive for kerosene, additive for heating oil, heating oil for home additive, additive for kerosene

HYDRA
Why we love it
  • Efficiently cleans injectors and burners.
  • Effectively removes carbon and soot.
  • Stabilises and optimizes fuel consumption.
Main Highlights
  • ADDITIVE FOR HEATING OIL & KEROSENE… Contains heavy duty detergents designed for heating oils and kerosene used as boiler fuel, will rapidly clean injectors and burners down to molecular levels.
  • ADDITIVE FOR KEROSENE… Removes heavy build-up of carbon and soot deposits from all surfaces in the boiler fuel system.
  • HEATING OIL ADDITIVE… Stabilises fuel by dissolving sludge in fuel tanks and Hydra Vulcan's dispersants help prevent it from reforming.
  • MAKES PREMIUM KEROSENE… Turns normal heating oil kerosene / heating oil into premium kerosene / premium domestic heating oil this helps to reduce fuel consumption.
  • USE WITH ALL DOMESTIC HEATING OIL… For all boilers 250ml treats Up To 1,250 litre
Show More
8.9
Excellent
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8.9
Excellent
HYDRA

HYDRA VULCAN Heating oil additive, 250ml treats up to 1,250 litres, additive for kerosene, additive for heating oil, heating oil for home additive, additive for kerosene

Why we love it
  • Efficiently cleans injectors and burners.
  • Effectively removes carbon and soot.
  • Stabilises and optimizes fuel consumption.
Main Highlights
  • ADDITIVE FOR HEATING OIL & KEROSENE… Contains heavy duty detergents designed for heating oils and kerosene used as boiler fuel, will rapidly clean injectors and burners down to molecular levels.
  • ADDITIVE FOR KEROSENE… Removes heavy build-up of carbon and soot deposits from all surfaces in the boiler fuel system.
  • HEATING OIL ADDITIVE… Stabilises fuel by dissolving sludge in fuel tanks and Hydra Vulcan's dispersants help prevent it from reforming.
  • MAKES PREMIUM KEROSENE… Turns normal heating oil kerosene / heating oil into premium kerosene / premium domestic heating oil this helps to reduce fuel consumption.
  • USE WITH ALL DOMESTIC HEATING OIL… For all boilers 250ml treats Up To 1,250 litre
Show More
7
LIQUI MOLY Pro-Line Oil Loss Stop | 1 L | Oil additive | SKU: 5182
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LIQUI MOLY Pro-Line Oil Loss Stop | 1 L | Oil additive | SKU: 5182

Liqui Moly
Why we love it
  • Reduces oil consumption significantly.
  • Regenerates rubber and plastic seals.
  • Suitable for all engines.
Main Highlights
  • Suitable for all petrol and diesel engines with or without a diesel particulate filter (DPF).
  • Can be mixed with all commercial engine oils.
  • 1 L, enough for around 15 L of engine oil Sealing action after 600 - 800 km
  • For professionals only!
  • Oil Loss Stop regenerates rubber and plastic engine seals (e.g., shaft seals and valve stem seals). Reduces oil consumption through piston rings (due to its uniform viscosity) and through valve guides (by regenerating the seals).
  • Suitable for all gasoline and diesel engines.
  • Contents of the can (1 liter) are sufficient for up to 15 liters of motor oil. The product can be added at any time. After adding, run the engine until warm or drive the vehicle.
Show More
8.7
Excellent
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8.7
Excellent
Liqui Moly

LIQUI MOLY Pro-Line Oil Loss Stop | 1 L | Oil additive | SKU: 5182

Why we love it
  • Reduces oil consumption significantly.
  • Regenerates rubber and plastic seals.
  • Suitable for all engines.
Main Highlights
  • Suitable for all petrol and diesel engines with or without a diesel particulate filter (DPF).
  • Can be mixed with all commercial engine oils.
  • 1 L, enough for around 15 L of engine oil Sealing action after 600 - 800 km
  • For professionals only!
  • Oil Loss Stop regenerates rubber and plastic engine seals (e.g., shaft seals and valve stem seals). Reduces oil consumption through piston rings (due to its uniform viscosity) and through valve guides (by regenerating the seals).
  • Suitable for all gasoline and diesel engines.
  • Contents of the can (1 liter) are sufficient for up to 15 liters of motor oil. The product can be added at any time. After adding, run the engine until warm or drive the vehicle.
Show More
8
WYNNS Formula Gold Engine Oil Treatment - Improves Compression & Reduces Wear - Enhances Oil Viscosity & Cleans Engine Internally - 500ml
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WYNNS Formula Gold Engine Oil Treatment - Improves Compression & Reduces Wear - Enhances Oil Viscosity & Cleans Engine Internally - 500ml

Wynn's
Why we love it
  • Extends engine life efficiently.
  • Reduces harmful exhaust emissions.
  • Compatible with all engine oils.
Main Highlights
  • ✅ DOUBLE ACTION FORMULA FOR ENGINE OPTIMIZATION: Formulated as a fully oil-soluble chemical treatment, this product delivers a powerful double action for engine efficiency. First, it improves engine compression, which supports consistent power delivery and enhanced performance. Second, it actively reduces wear on internal engine components, contributing to long-term reliability. By targeting two essential engine functions simultaneously, the treatment not only stabilises mechanical operation but also supports smoother running under varying driving conditions.
  • ✅ ENHANCED OIL PERFORMANCE AND VISCOSITY CONTROL: Designed to reinforce the oil's protective properties, this treatment significantly improves the oil’s viscosity index, enabling it to perform better across a wider range of temperatures. It delays the premature thickening that can affect fresh oil, ensuring the lubricant retains its flow characteristics even in extreme conditions. The formulation enhances the oil’s structural integrity, promoting longer service intervals and consistent lubrication performance.
  • ✅ SLUDGE CONTROL AND SYSTEM CLEANLINESS: By actively reducing the formation of sludge and harmful deposits, this chemical treatment helps maintain a clean and efficient oil system. Sludge build-up can clog oil passages, impair circulation, and reduce engine efficiency. The advanced formulation dissolves existing contaminants and prevents the accumulation of new residues, safeguarding the engine’s internal components from abrasive particles and sticky deposits. Regular use promotes better oil flow, reduces frictional losses, and ensures that oil filters and galleries remain clean and unblocked.
  • ✅ LOWER EMISSIONS AND REDUCED OIL CONSUMPTION: The treatment contributes to reduced oil consumption and minimises the release of harmful exhaust emissions. By enhancing oil stability and improving engine sealing through better compression, less oil is burned during engine operation. This directly leads to fewer particulates and hydrocarbons being emitted into the atmosphere. Lower oil consumption also means fewer top-ups are necessary, resulting in better cost-efficiency and environmental sustainability. The product’s role in keeping internal parts clean and operating at peak efficiency further ensures optimal combustion and reduced emissions.
  • ✅ UNIVERSAL COMPATIBILITY AND SAFE FORMULATION: This treatment is free from solid particles, ensuring it will not damage engine components or catalytic converters. Its fully oil-soluble nature allows for seamless blending with all grades of engine oil, including synthetic, semi-synthetic, and mineral-based types. It is suitable for both regular and low SAPS (sulphated ash, phosphorus, and sulphur) applications, making it an ideal choice for a wide variety of engine types. Compatible with petrol, diesel, LPG, and hybrid engines, this product is designed for flexibility and convenience. A single 500ml bottle is effective for oil volumes ranging from 4 to 6 litres.
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8.7
Excellent
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8.7
Excellent
Wynn's

WYNNS Formula Gold Engine Oil Treatment - Improves Compression & Reduces Wear - Enhances Oil Viscosity & Cleans Engine Internally - 500ml

Why we love it
  • Extends engine life efficiently.
  • Reduces harmful exhaust emissions.
  • Compatible with all engine oils.
Main Highlights
  • ✅ DOUBLE ACTION FORMULA FOR ENGINE OPTIMIZATION: Formulated as a fully oil-soluble chemical treatment, this product delivers a powerful double action for engine efficiency. First, it improves engine compression, which supports consistent power delivery and enhanced performance. Second, it actively reduces wear on internal engine components, contributing to long-term reliability. By targeting two essential engine functions simultaneously, the treatment not only stabilises mechanical operation but also supports smoother running under varying driving conditions.
  • ✅ ENHANCED OIL PERFORMANCE AND VISCOSITY CONTROL: Designed to reinforce the oil's protective properties, this treatment significantly improves the oil’s viscosity index, enabling it to perform better across a wider range of temperatures. It delays the premature thickening that can affect fresh oil, ensuring the lubricant retains its flow characteristics even in extreme conditions. The formulation enhances the oil’s structural integrity, promoting longer service intervals and consistent lubrication performance.
  • ✅ SLUDGE CONTROL AND SYSTEM CLEANLINESS: By actively reducing the formation of sludge and harmful deposits, this chemical treatment helps maintain a clean and efficient oil system. Sludge build-up can clog oil passages, impair circulation, and reduce engine efficiency. The advanced formulation dissolves existing contaminants and prevents the accumulation of new residues, safeguarding the engine’s internal components from abrasive particles and sticky deposits. Regular use promotes better oil flow, reduces frictional losses, and ensures that oil filters and galleries remain clean and unblocked.
  • ✅ LOWER EMISSIONS AND REDUCED OIL CONSUMPTION: The treatment contributes to reduced oil consumption and minimises the release of harmful exhaust emissions. By enhancing oil stability and improving engine sealing through better compression, less oil is burned during engine operation. This directly leads to fewer particulates and hydrocarbons being emitted into the atmosphere. Lower oil consumption also means fewer top-ups are necessary, resulting in better cost-efficiency and environmental sustainability. The product’s role in keeping internal parts clean and operating at peak efficiency further ensures optimal combustion and reduced emissions.
  • ✅ UNIVERSAL COMPATIBILITY AND SAFE FORMULATION: This treatment is free from solid particles, ensuring it will not damage engine components or catalytic converters. Its fully oil-soluble nature allows for seamless blending with all grades of engine oil, including synthetic, semi-synthetic, and mineral-based types. It is suitable for both regular and low SAPS (sulphated ash, phosphorus, and sulphur) applications, making it an ideal choice for a wide variety of engine types. Compatible with petrol, diesel, LPG, and hybrid engines, this product is designed for flexibility and convenience. A single 500ml bottle is effective for oil volumes ranging from 4 to 6 litres.
Show More
9
LIQUI MOLY Viscoplus for Oil | 300 ml | Oil additive | SKU: 8958
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LIQUI MOLY Viscoplus for Oil | 300 ml | Oil additive | SKU: 8958

Liqui Moly
16% Off
Why we love it
  • Reduces engine noise.
  • Optimum lubrication always.
  • Enhances oil pressure consistency.
Main Highlights
  • Stabilizes loss of viscosity
  • Optimum lubrication under all operating conditions
  • Fully compatible with mineral and synthetic oils
  • Reduces engine noise
  • Optimum oil pressure under all operating conditions
Show More
8.7
Excellent
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8.7
Excellent
Liqui Moly

LIQUI MOLY Viscoplus for Oil | 300 ml | Oil additive | SKU: 8958

16% Off
Why we love it
  • Reduces engine noise.
  • Optimum lubrication always.
  • Enhances oil pressure consistency.
Main Highlights
  • Stabilizes loss of viscosity
  • Optimum lubrication under all operating conditions
  • Fully compatible with mineral and synthetic oils
  • Reduces engine noise
  • Optimum oil pressure under all operating conditions
Show More
10
LIQUI MOLY Oil Additive | 300 ml | Oil additive | SKU: 2591

LIQUI MOLY Oil Additive | 300 ml | Oil additive | SKU: 2591

Liqui Moly
Why we love it
  • Fits all friction surfaces.
  • Ideal for furniture.
  • Compact and easily stored.
Main Highlights
  • Item Package Length: 5.5cm
  • Item Package Width: 5.5cm
  • Item Package Height: 18.5cm
Show More
8.7
Excellent
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8.7
Excellent
Liqui Moly

LIQUI MOLY Oil Additive | 300 ml | Oil additive | SKU: 2591

Why we love it
  • Fits all friction surfaces.
  • Ideal for furniture.
  • Compact and easily stored.
Main Highlights
  • Item Package Length: 5.5cm
  • Item Package Width: 5.5cm
  • Item Package Height: 18.5cm
Show More

We scanned 538 products

We reviewed these offers relevant to the Oil Additives within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like HYDRA, Lucas Oil, Liqui Moly, MICRO ZX1, Wynn's, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.
For the best Oil Additives in the market, we considered we took a deep dive into 2691 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that: