Best Oil Additive To Stop Burning Oil: Practical Features for Easier Everyday Use

A strong oil additive for burning oil should target the likely failure mode—worn seals, loose internal clearances, or leaks—and suit an older, high-mileage engine. The products here take different approaches: some use high-viscosity formulas to reduce oil consumption and blue smoke, while others focus on rejuvenating seals, stopping leaks, reducing wear, or stabilizing oil. Bar’s Leaks OS-1 and Liqui Moly Motor Oil Saver are especially focused on seals and oil loss.

Bardahl NoSmoke and Liqui Moly Oil Smoke Stop emphasize burning oil and smoke in worn engines. STP adds high-mileage treatment with stop-leak support, while Lucas, Prolube, and XADO focus more broadly on lubrication or wear protection.

Check the stated engine type, oil capacity, and symptom before choosing.

For an engine that burns oil and produces blue smoke, Liqui Moly Oil Smoke Stop is a focused option because its high-viscosity formula is designed for worn engines, high loads, and high temperatures. Liqui Moly Motor Oil Saver is better aligned with aged valve-stem seals and external leaks. Bar’s Leaks OS-1 targets leaking seals and guides and is listed for gasoline, diesel, turbocharged, hybrid, and racing engines.

For broader high-mileage support, consider STP High Mileage Oil Treatment + Stop Leak or Lucas High Mileage Oil Stabilizer.

Oil Additives for Burning Oil: A Comparison

Image	Product	Buy
Best Pick 1	STP High Mileage Oil Treatment + Stop Leak – 15 FL OZ Best for: High mileage vehicles Brand: STP | Compatible with Vehicle Type: Car	View on Amazon
Best Pick 2	Bar's Leaks OS-1 Oil Seal Engine Oil Burning/Leak Repair, 16.9oz, 1-Pack Best for: Oil burning and leaks Brand: Bar's Leaks | Compatible with Vehicle Type: Car, Truck	View on Amazon
Best Pick 3	LIQUI MOLY Motor Oil Saver | 300 ml | Oil additive | SKU: 2020 Best for: General oil treatment Brand: Liqui Moly | Compatible with Vehicle Type: Car	View on Amazon
Best Pick 4	Bardahl NoSmoke StopLeak Motor Oil Additive Oil Burning Leak Sealer 16 oz Best for: Smoke reduction Brand: Bardahl | Item Weight: ‎11.2 ounces	View on Amazon
Best Pick 5	Lucas Oil 10001 Heavy Duty Oil Stabilizer – 1 Quart Best for: Heavy duty applications Brand: Lucas Oil | Compatible with Vehicle Type: Car	View on Amazon

How We Compared These Products

We compared dimensions, capacity, materials, compatibility, included components, and care requirements across many Amazon listings. These details matter because the product must fit the available space, intended use, setup requirements, and maintenance routine. After examining the wider field, we selected 10 products from STP, Bar’s Leaks, Liqui Moly, Bardahl, Lucas Oil, Prolube, and XADO.

The shortlist includes products such as STP High Mileage Oil Treatment + Stop Leak, Bar’s Leaks OS-1 Oil Seal Engine Oil Burning/Leak Repair, and LIQUI MOLY Motor Oil Saver. Every recommendation is tied to information stated for that specific product; unclear or missing features were treated as unknown rather than filled with assumptions.

Detailed Reviews: Best Oil Additive To Stop Burning Oil

1. STP High Mileage Oil Treatment + Stop Leak – 15 FL OZ

Best for: High-mileage engine protection.

STP High Mileage Oil Treatment + Stop Leak is formulated for vehicles with over 75,000 miles. Its high-viscosity additive includes ZDDP for anti-wear protection, creating a cushion between moving parts to fight friction and rejuvenating seals to stop leaks, noise, and smoke.

This STP oil treatment is designed to protect engines in high-mileage vehicles. The high-viscosity formula creates a protective cushion between moving engine parts, helping to reduce metal-to-metal friction. Additionally, the integrated engine stop leak component works to rejuvenate seals and gaskets, effectively minimizing oil leaks, engine noise, and smoke.

Product Details

Pros

• Formulated for vehicles over 75,000 miles
• Includes ZDDP as an anti-wear agent
• Creates a thick cushion between moving parts
• Helps rejuvenate seals and gaskets

Cons

• May not be suitable for engines with very low mileage

Ideal for owners of high-mileage vehicles seeking to protect their engine from wear and reduce oil leaks, ensuring smoother operation and less internal friction.

2. Bar’s Leaks OS-1 Oil Seal Engine Oil Burning/Leak Repair, 16.9oz, 1-Pack

Best for: Engine oil seal repair.

Bar's Leaks OS-1 Oil Seal Engine Oil Burning/Leak Repair is engineered to work in all gasoline and diesel engines, including turbocharged and hybrid models. It renews worn valve seals and guides, addressing oil consumption issues for vehicles that add up to one quart of oil per day.

This Bar's Leaks product is designed to repair leaking main seals and gaskets in both gasoline and diesel engines. It effectively renews worn valve seals and guides, which can be a primary cause of oil consumption. The formula is compatible with various engine types, including turbocharged, EcoBoost, and hybrid systems, aiming to reduce oil loss.

Product Details

Pros

• Repairs leaking main seals and gaskets
• Renews worn valve seals and guides
• Works in all gasoline and diesel engines
• Suitable for turbocharged and hybrid engines

Cons

• Not recommended if oil consumption exceeds one quart per day

A good choice for owners of gasoline or diesel vehicles experiencing moderate oil leaks or consumption, aiming to restore engine seals and reduce the need for frequent oil top-ups.

3. LIQUI MOLY Motor Oil Saver | 300 ml | Oil additive | SKU: 2020

Best for: Oil consumption reduction.

LIQUI MOLY Motor Oil Saver is an additive designed to reduce oil consumption through piston rings and valve guides. It regenerates engine seals made of plastic and rubber, preventing pollution from oil drips and minimizing external leaks for cleaner emissions.

This Liqui Moly additive maintains and regenerates rubber and plastic seals within the engine oil circuit of gas and diesel engines. By addressing aged and hardened valve stem seals, it effectively reduces oil consumption and prevents blue exhaust smoke, thereby improving emissions. External leaks are minimized, contributing to a cleaner engine environment.

Product Details

Pros

• Reduces oil consumption via piston rings and valve guides
• Prevents blue, smoky exhaust fumes
• Regenerates plastic and rubber engine seals
• Minimizes external oil leaks

Cons

• May require multiple applications for significant seal regeneration

Recommended for drivers of gasoline or diesel cars looking to decrease oil consumption, eliminate blue exhaust smoke, and minimize external leaks through seal regeneration.

4. Bardahl NoSmoke StopLeak Motor Oil Additive Oil Burning Leak Sealer 16 oz

Best for: Older engine restoration.

Bardahl NoSmoke StopLeak Motor Oil Additive is an extra-thick formula designed to restore older engines by filling loose tolerances. It effectively reduces oil burning and excessive exhaust smoke, ensuring your vehicle runs cleaner and smoother while also sealing oil leaks.

This Bardahl additive provides top-quality protection for older engines experiencing wear. Its enhanced NoSmoke + StopLeak formula fills in the loosened tolerances between moving parts, which allows oil to bypass valves and piston rings into the combustion chamber. This action directly reduces oil burning and excessive exhaust smoke, promoting cleaner and smoother engine operation.

Product Details

Pros

• Stops engine oil burning
• Reduces excessive exhaust smoke
• Fills loose tolerances in older engines
• Helps seal oil leaks

Cons

• Not intended for use in new or low-mileage engines

An essential additive for owners of older cars experiencing oil burning and smoke, this product aims to restore engine performance and reduce emissions by addressing internal wear.

5. Lucas Oil 10001 Heavy Duty Oil Stabilizer – 1 Quart

Best for: Heavy-duty engine performance.

Lucas Oil 10001 Heavy Duty Oil Stabilizer is a 100% petroleum-based additive designed to control noise, heat, and wear in manual transmissions and differentials. It eliminates dry starts and minimizes friction, heat, and wear in any engine, keeping them running smoothly.

This heavy-duty oil stabilizer from Lucas Oil is a pure petroleum multi-use oil supplement. It is formulated to minimize friction, heat, and wear in any engine, while also controlling noise. The stabilizer eliminates dry starts and is trusted in demanding conditions, making it suitable for both new and high-performance engines seeking enhanced lubrication.

Product Details

Pros

• Controls noise, heat, and wear
• Eliminates dry starts
• Minimizes friction
• Suitable for new engines

Cons

• Does not specifically target oil burning or leaks

A versatile option for drivers seeking to reduce engine wear and noise, particularly in demanding applications or for maintaining newer engines, though not a primary solution for oil burning.

6. Bar’s Leaks 1000 High Mileage Engine Repair, 16.9 oz, 1-Pack

Best for: High mileage oil consumption.

Bar's Leaks 1000 High Mileage Engine Repair is compatible with all engine oil types, including synthetic and high-mileage formulas. It is designed to address issues where the engine reads low on oil levels, even if a leak is not immediately apparent.

This Bar's Leaks product is formulated for high-mileage engines and is compatible with all types of engine oils, including petroleum, synthetic, and high-mileage blends. It is intended to help when an engine is reading low on oil levels, which can be an indicator of consumption through worn components rather than external leaks. It aims to provide a solution for such scenarios.

Product Details

Pros

• Compatible with all engine oil types
• Suitable for high-mileage vehicles
• Addresses low oil levels
• Can be used with synthetic oils

Cons

• Does not explicitly mention stopping oil burning

A suitable choice for owners of high-mileage vehicles experiencing unexplained low oil levels, offering compatibility with various oil types to help manage engine oil consumption.

7. Prolube Oil Treatment – Engine Oil Additive for Gas & Diesel Engines – Reduces Wear, Noise, Vibration – Boosts Fuel Economy & Horsepower – Works on Transmissions & Differentials (1QT)

Best for: Universal engine treatment.

Prolube Oil Treatment is an engine oil additive for both gas and diesel engines designed to reduce wear, noise, and vibration. It also boosts fuel economy and horsepower, and works effectively on transmissions and differentials for comprehensive vehicle maintenance.

This Prolube additive is engineered for a wide range of vehicle types, including cars, trucks, ATVs, and boats. It functions by reducing wear, noise, and vibration within the engine. Furthermore, it is designed to enhance fuel economy and horsepower, while also providing benefits for transmissions and differentials, offering a multi-purpose solution for vehicle maintenance.

Product Details

Pros

• Reduces wear, noise, and vibration
• Boosts fuel economy
• Boosts horsepower
• Works on transmissions and differentials

Cons

• Does not specifically mention stopping oil burning

A versatile additive for owners of various vehicles, including cars and trucks, seeking to improve engine performance, reduce wear, and enhance fuel efficiency, though not specifically for oil burning issues.

8. Lucas Oil 10118 High Mileage Oil Stabilizer – 1 Quart

Best for: High mileage engine care.

Lucas Oil 10118 High Mileage Oil Stabilizer is a 100% petroleum product designed to lubricate all internal parts, minimizing wear in any engine. It effectively eliminates noise, emissions, and oil consumption associated with worn engines, ensuring reliable performance.

This high-mileage oil stabilizer from Lucas Oil is a 100% petroleum-based formulation that lubricates all internal engine components to minimize wear. It is specifically developed to address issues common in worn engines, such as noise, emissions, and oil consumption. The product is tested in the field for maximum reliability across a range of engine and gearbox applications.

Product Details

Pros

• Minimizes wear in any engine
• Eliminates noise associated with worn engines
• Reduces emissions from worn engines
• Addresses oil consumption

Cons

• Does not explicitly state it stops oil burning

Ideal for owners of high-mileage vehicles experiencing noise, emissions, or oil consumption issues, this stabilizer aims to reduce wear and improve overall engine reliability with its petroleum-based formula.

9. Liqui Moly Oil Smoke Stop 300 ml (2122) Designed to minimize Blue Exhaust Smoke

Best for: Blue smoke reduction.

Liqui Moly Oil Smoke Stop is an additive with very high viscosity, designed to seal gaps caused by wear in internal engine parts. It is particularly effective for old, worn engines subjected to high loads, minimizing blue exhaust smoke and improving compression.

This Liqui Moly additive is specifically formulated to combat blue exhaust smoke in engines that burn oil excessively. Its superior viscosity index improver material maintains oil viscosity at higher levels, effectively sealing wear-induced gaps in internal engine parts like piston rings and valve guides. This action improves compression and is highly recommended for older, heavily used engines.

Product Details

Pros

• Minimizes blue exhaust smoke
• Seals gaps caused by wear
• Improves compression
• Suitable for old, worn engines

Cons

• Primarily targets smoke, not all oil consumption causes

A targeted solution for drivers whose engines are producing blue smoke due to oil burning, this additive is best suited for older, high-mileage vehicles to reduce visible emissions and improve compression.

10. XADO Engine Oil Additive/Protection For Motor/Additive For Wear Protection & Rebuilding Of Worn Metal Surfaces/Metal Conditioner With Revitalizant 1 Stage Maximum (Up To 5qt Of Oil Capacity)

Best for: Engine wear rebuilding.

XADO Engine Oil Additive is a metal conditioner with Revitalizant technology designed for wear protection and rebuilding of worn metal surfaces. It works in all gasoline, natural-gas, and diesel engines up to 5 quarts of oil capacity.

This XADO additive utilizes Revitalizant technology to protect and rebuild worn metal surfaces within the engine. It is compatible with all types of motor oils, from full synthetic to mineral oils, and can be used in various gasoline, natural-gas, and diesel engines. The revitalization cycle takes 600 to 900 miles to complete, during which oil changes are not recommended.

Product Details

Pros

• Rebuilds worn metal surfaces
• Provides wear protection
• Works in all engine types (gas, diesel, natural-gas)
• Compatible with all motor oil types

Cons

• Requires a long revitalization cycle without oil changes

Suitable for owners of cars and trucks with up to 5 quarts of oil capacity looking for a long-term engine rebuilding solution, provided they can adhere to the extended revitalization period without oil changes.

What Buyers Often Overlook

Match the additive to the oil-burning failure mode

Choose a seal-focused additive when hardened or worn seals appear to be contributing to oil loss, and choose a viscosity-focused formula when an older engine is burning oil and producing blue smoke. Liqui Moly Motor Oil Saver is described as regenerating rubber and plastic seals, reducing consumption through piston rings and valve guides, and minimizing external leaks. Bar’s Leaks OS-1 is designed to repair leaking main seals and gaskets and renew worn valve seals and guides; its stated candidate limit is an engine consuming no more than one quart per day.

Liqui Moly Oil Smoke Stop instead uses very high viscosity to seal wear-related gaps and is recommended for old, worn engines under high loads and temperatures. STP combines high-mileage treatment with stop-leak support, while Bardahl NoSmoke uses an extra-thick formula for loose tolerances, burning oil, and excessive exhaust smoke.

These are symptom-oriented differences, not a guarantee of repair.

The Key Product Trade-Off

Check engine type, oil compatibility, and treatment capacity

Compatibility and capacity matter because these treatments are not sized or described identically. Bar’s Leaks OS-1 is listed for gasoline and diesel engines, including turbocharged, EcoBoost, hybrid, and racing applications, while Bar’s Leaks 1000 is compatible with petroleum, synthetic, and high-mileage engine oils. Liqui Moly Motor Oil Saver is specified for gas and diesel engines, and Liqui Moly Oil Smoke Stop is suitable for oils commonly used in petrol and diesel engines.

XADO is stated to work in gasoline, natural-gas, and diesel passenger-car and truck engines, plus four-stroke motorcycles, with oil systems up to 5 quarts; its revitalization cycle takes 600 to 900 miles. Product size also varies from 300 milliliters for both Liqui Moly treatments to 1 quart for Lucas and Prolube products.

Follow the product label and avoid assuming a larger bottle is automatically appropriate for your sump.

Best Oil Additive To Stop Burning Oil: Buyer's Guide

Fit, Dimensions, and Compatibility

Compare the listed dimensions with the intended counter, cabinet, appliance, storage, or installation space. Confirm model compatibility and connection requirements where they are supplied. A useful feature cannot compensate for a product that does not physically fit or work with the buyer’s existing setup.

Capacity, Output, and Operating Format

Match listed capacity, volume, output, and operating mode to the actual household or work routine. Larger figures can support heavier use, while a smaller format may be easier to place and maintain. Treat daily output, immediate storage, and container capacity as separate specifications when the listing distinguishes them.

Materials, Construction, and Care

Use the listed materials and care instructions to judge cleaning effort, storage conditions, and compatibility with the intended use. Dishwasher, freezer, food-contact, or weather-related claims are included only when supplied for that product. Check whether routine care fits the way the product will be used.

Included Components and Setup Needs

Review the included components before planning installation or first use. Hoses, adapters, lids, paddles, bowls, brushes, controls, and manuals vary by listing. Confirm power, water, assembly, or accessory requirements from the supplied product information rather than assuming that separately pictured parts are included.

Which Should You Choose?

Choose Liqui Moly Oil Smoke Stop if your main symptom is blue smoke from an older, worn engine, especially under high loads or temperatures. Choose Liqui Moly Motor Oil Saver or Bar’s Leaks OS-1 when aged seals, valve guides, gaskets, or external leaks are the stronger concern. Select STP High Mileage Oil Treatment + Stop Leak for a vehicle over 75,000 miles needing a combined high-mileage and stop-leak treatment.

Bardahl NoSmoke suits buyers seeking a thick formula for loose tolerances and smoke. Lucas High Mileage Oil Stabilizer and Lucas Heavy Duty Oil Stabilizer are broader petroleum-based lubrication choices, while XADO is the option with a stated capacity of up to 5 quarts and a longer revitalization cycle.

Quick Buying Checklist

• Confirm the complete dimensions against the available space.
• Verify model, accessory, connection, and appliance compatibility.
• Match capacity or output to the expected amount of use.
• Compare materials and care instructions with the maintenance routine.
• Check the included components before planning setup or first use.
• Confirm listed power, water, storage, or installation requirements where applicable.

Frequently Asked Questions

How do oil additives stop oil burning?

These additives work by conditioning seals and gaskets, making them swell slightly to prevent oil from leaking past them into the combustion chamber. Some also contain ingredients that help to reduce friction and wear, which can contribute to oil consumption.

Are oil additives safe for all engines?

Most oil additives are formulated to be safe for a wide range of engines, including those with turbochargers and catalytic converters. However, it’s always best to check the product’s compatibility with your specific vehicle’s make and model before use.

How often should I use an oil additive?

Usage frequency varies by product. Some are designed for a single oil change, while others can be added periodically. Always follow the manufacturer’s instructions on the product label for the recommended dosage and interval.

Will an oil additive fix worn engine parts?

While some additives can help to reduce friction and wear, they are not a substitute for mechanical repair. If your engine has significant internal wear, an additive might offer temporary relief but won’t fully restore performance or stop burning oil.

Can oil additives improve fuel economy?

Some oil additives claim to improve fuel economy by reducing friction within the engine. By allowing engine components to move more freely, less energy is lost to friction, potentially leading to a slight increase in miles per gallon.

Final Words

When dealing with oil burning, additives can offer a temporary solution by conditioning seals. For high mileage vehicles, specific formulations aim to address common issues. However, these products are not a substitute for mechanical repair.

If oil burning persists, consult a mechanic to diagnose underlying engine problems.