Additive troubleshooting guide
Need help choosing the right Bardahl product? Contact us for product advice.
Diesel additives
- Dirty particulate filter
Bardahl recommends: Bardahl DPF Cleaner.
Bardahl has developed a DPF Cleaner (Diesel Particulate Filter Cleaner) to clean dirty particulate filters without dismantling. Bardahl DPF Cleaner is suitable for every type of diesel engine fitted with a particulate filter.
Want to buy preventive Particulate Filter Cleaner?
- Blocked particulate filter
Bardahl recommends: Bardahl Professional Particulate Filter Cleaning.
Bardahl has developed the DPF Professional Cleaning kit to help avoid having to replace your particulate filter prematurely. This can extend the service life of the particulate filter by up to 100%.
This professional particulate filter cleaning kit provides professional cleaning of the particulate filter, without dismantling.
Bardahl DPF Professional Cleaning kit is suitable for every type of diesel engine fitted with a particulate filter.
This treatment can only be carried out by garages trained by Bardahl.
Find Bardahl Particulate Filter Service Centres near you.
- Engine in limp mode
Bardahl recommends: Bardahl Professional Particulate Filter Cleaning.
Bardahl has developed the DPF Professional Cleaning kit to help avoid having to replace your particulate filter prematurely. This can extend the service life of the particulate filter by up to 100%.
This professional particulate filter cleaning kit provides professional cleaning of the particulate filter, without dismantling. This also applies to engines in limp mode.
Bardahl DPF Professional Cleaning kit is suitable for every type of diesel engine fitted with a particulate filter.
This treatment can only be carried out by garages trained by Bardahl.
Find Bardahl Particulate Filter Service Centres near you.
- Having the air intake cleaned
Bardahl recommends: Bardahl Air Intake Cleaning.
The build-up of sludge/carbon deposits in the intake system reduces the airflow needed for proper combustion.
Reduced airflow causes a loss of power and engines that are difficult to start. Dirty intake and exhaust valves no longer seal properly, causing a loss of compression.
How can you identify contamination?
An air intake that is not working properly causes excessive exhaust smoke, higher fuel consumption, a loss of power, difficult starting and a loss of compression. The way to properly resolve these problems is a complete, professional cleaning treatment.
Want to have the air intake professionally cleaned?
Find Bardahl Air Intake Service Centres near you.
Read more about Bardahl Air Intake Cleaning
- Cleaning a diesel engine turbocharger
Bardahl recommends: Bardahl Turbo Cleaner.
Bardahl Turbo Cleaner is a highly effective diesel additive that burns off and carries away residual soot particles. The cleaner removes, without dismantling, soot deposits from the turbocharger.
These deposits cause the variable turbo vanes to stick and the engine to lose power.
Want to buy Turbo Cleaner?
Read more about Bardahl Turbo Cleaner (item no. 3206)
- Dirty diesel engine turbocharger
Bardahl recommends: Bardahl Turbo Cleaner.
Bardahl Turbo Cleaner is a highly effective diesel additive that burns off and carries away residual soot particles. The cleaner removes, without dismantling, soot deposits from the turbocharger.
These deposits cause the variable turbo vanes to stick and the engine to lose power.
Want to buy Turbo Cleaner?
Read more about Bardahl Turbo Cleaner (item no. 3206)
Watch the Bardahl Turbo Cleaner product video
- Keeping diesel in good condition (larger fuel tanks)
Bardahl recommends: Bardahl BDC.
Bardahl BDC is a complete fuel system conditioner that prevents moisture from taking hold in diesel. This keeps the fuel at a consistent quality. BDC also cleans the injectors, among other components, and lubricates the fuel system.
What is the effect of too much moisture in the fuel?
This can cause rust and bacterial growth and can damage the fuel pump. These two processes have a destructive effect on a diesel injection system.
Want to buy Bardahl BDC?
Read more about Bardahl BDC (item no. 1200)
- Preventing bacterial growth in diesel
Bardahl recommends: Bardahl BDC.
Bardahl BDC is a complete fuel system conditioner that prevents moisture from taking hold in diesel. This keeps the fuel at a consistent quality.
What is the effect of too much moisture in the fuel?
This can cause rust and bacterial growth and can damage the fuel pump. These two processes have a destructive effect on a diesel injection system.
Want to buy Bardahl BDC?
Read more about Bardahl BDC (item no. 1200)
- Getting maximum performance from a diesel engine (tractors, boats, storage tanks)
Bardahl recommends: Bardahl BDC.
Bardahl BDC is a complete fuel system conditioner that prevents moisture from taking hold in the fuel. This keeps the fuel at a consistent quality.
What is the effect of too much moisture in the fuel?
This can cause rust and bacterial growth and can damage the fuel pump. These two processes have a destructive effect on a diesel injection system.
Want to buy Bardahl BDC?
Read more about Bardahl BDC (item no. 1200)
- Bacterial growth in diesel?
Bardahl recommends: Bardahl DAB.
Bardahl Diesel Anti Bacteria is an effective biocide, specially developed to remove bacteria and fungi from diesel fuel.
Bacterial growth can block the fuel filter and also damage high-pressure injection systems (Common Rail). Bardahl DAB also provides long-lasting corrosion protection for the tank and lines.
Want to buy Bardahl DAB?
Read more about Bardahl Diesel Anti Bacteria (item no. 2600)
- Keeping a diesel engine in good condition (passenger car)
Bardahl recommends: Bardahl Diesel Injector Cleaner.
Bardahl Diesel Injector Cleaner is a diesel cleaner that cleans the engine and keeps it in good condition. It is a complete diesel additive that thoroughly cleans and lubricates the fuel system.
The advice is to put the diesel cleaner into the fuel tank first and then fill up with fuel. This immediately creates a homogeneous mixture of the additive and fuel.
Want to buy Bardahl Diesel Injector Cleaner?
- Dirty EGR valve
Bardahl recommends: Bardahl EGR Valve Cleaning Kit.
Bardahl EGR Valve Cleaning Kit is a set of two products for cleaning the intake tract, valves and EGR valve.
Soot deposits are removed and the idle speed is restored. As a result, fuel consumption decreases and the exhaust gases are cleaner.
Want to buy Bardahl EGR Valve Cleaner?
Read more about Bardahl EGR Valve Cleaning Kit (item no. 9123)
- Dirty diesel engine
Bardahl recommends: Bardahl Diesel Cleaner.
Internal engine contamination is common today. Bardahl has two diesel injector cleaners specially designed to resolve problems with dirty fuel systems and restore engine performance.
The formulation of Common Rail Diesel Injector Cleaner is stronger than Diesel Injector Cleaner (ref. 1185) and comes with 200ml more content.
The advice is to put the diesel cleaner into the fuel tank first and then fill up with fuel. This immediately creates a homogeneous mixture of the additive and fuel.
Want to buy Bardahl Common Rail Diesel Injector Cleaner?
Want to buy Bardahl Diesel Injector Cleaner?
Read more about Bardahl Common Rail Diesel Injector Cleaner (item no. 1155B)
Read more about Bardahl Diesel Injector Cleaner (item no. 1185)
- Diesel engine runs unevenly
Bardahl recommends: Bardahl Diesel Cleaner.
Internal engine contamination is common today. Bardahl has two diesel injector cleaners specially designed to resolve problems with dirty fuel systems and restore engine performance.
The formulation of Common Rail Diesel Injector Cleaner is stronger than Diesel Injector Cleaner (ref. 1185) and comes with 200ml more content.
The advice is to put the diesel cleaner into the fuel tank first and then fill up with fuel. This immediately creates a homogeneous mixture of the additive and fuel.
Want to buy Bardahl Common Rail Diesel Injector Cleaner?
Want to buy Bardahl Diesel Injector Cleaner?
Read more about Bardahl Common Rail Diesel Injector Cleaner (item no. 1155B)
Read more about Bardahl Diesel Injector Cleaner (item no. 1185)
- Diesel engine is difficult to start
Bardahl recommends: Bardahl Diesel Cleaner.
Internal engine contamination is common today. Bardahl has two diesel injector cleaners specially designed to resolve problems with dirty fuel systems and restore engine performance.
The formulation of Common Rail Diesel Injector Cleaner is stronger than Diesel Injector Cleaner (ref. 1185) and comes with 200ml more content.
The advice is to put the diesel cleaner into the fuel tank first and then fill up with fuel. This immediately creates a homogeneous mixture of the additive and fuel.
Want to buy Bardahl Common Rail Diesel Injector Cleaner?
Want to buy Bardahl Diesel Injector Cleaner?
Read more about Bardahl Common Rail Diesel Injector Cleaner (item no. 1155B)
Read more about Bardahl Diesel Injector Cleaner (item no. 1185)
- Diesel engine performs less well than before
Bardahl recommends: Bardahl Diesel Cleaner.
Internal engine contamination is common today. Bardahl has two diesel injector cleaners specially designed to resolve problems with dirty fuel systems and restore engine performance.
The formulation of Common Rail Diesel Injector Cleaner is stronger than Diesel Injector Cleaner (ref. 1185) and comes with 200ml more content.
The advice is to put the diesel cleaner into the fuel tank first and then fill up with fuel. This immediately creates a homogeneous mixture of the additive and fuel.
Want to buy Bardahl Common Rail Diesel Injector Cleaner?
Want to buy Bardahl Diesel Injector Cleaner?
Read more about Bardahl Common Rail Diesel Injector Cleaner (item no. 1155B)
Read more about Bardahl Diesel Injector Cleaner (item no. 1185)
- Engine starts poorly in cold weather
Bardahl recommends: Bardahl Water Remover.
This may indicate water in the fuel tank. Bardahl Water Remover removes moisture/condensation from the fuel. Suitable for both petrol and diesel engines.
The advice is to put Water Remover into the fuel tank first and then fill up with fuel. This immediately creates a homogeneous mixture of the additive and fuel.
Want to buy Bardahl Water Remover?
Read more about Bardahl Water Remover (item no. 1082)
- Rust developing in the fuel tank
Bardahl recommends: Bardahl Water Remover.
This may indicate water in the fuel tank. Bardahl Water Remover is a fuel additive that removes moisture/condensation from the fuel. Suitable for both petrol and diesel engines.
The advice is to put Water Remover into the fuel tank first and then fill up with fuel. This immediately creates a homogeneous mixture of the additive and fuel.
Want to buy Bardahl Water Remover?
Read more about Bardahl Water Remover (item no. 1082)
- Water in the fuel tank
Bardahl recommends: Bardahl Water Remover.
This may indicate water in the fuel tank. Bardahl Fuel Water Remover is a water remover that removes moisture/condensation from the fuel. Suitable for both petrol and diesel engines.
The advice is to put the water remover into the fuel tank first and then fill up with fuel. This immediately creates a homogeneous mixture of the additive and fuel.
Want to buy Bardahl Water Remover?
Read more about Bardahl Fuel Water Remover (item no. 1082)
- Preventing diesel from freezing
Bardahl recommends: Bardahl Diesel Antifreeze.
Even at a ratio of 1:1000, Bardahl Diesel Antifreeze protects diesel down to approximately -30°C. This eliminates the risk of blocked lines and filters. At a ratio of 1:500, Diesel Antifreeze protects down to a maximum of -33°C.
Bardahl Diesel Antifreeze lowers the solidification point of diesel and prevents fuel lines and fuel filters from becoming blocked.
It also acts as a fuel dryer, absorbing moisture and allowing it to burn with the fuel. The effectiveness of Bardahl Diesel Antifreeze has been measured in various European diesel fuels.
The exact operating range cannot be specified, because fuels contain different percentages of paraffin depending on their place of origin.
Bardahl Diesel Antifreeze does more:
1. Lowers the solidification point of diesel to -33°C
2. Prevents lines and fuel filters from becoming blocked
3. Prevents moisture and corrosion in the fuel systemSuitable for all types of diesel: B7/biodiesel/premium blends/GTL
Want to buy Bardahl Diesel Antifreeze?
Read more about Bardahl Diesel Antifreeze (item no. 2500)
- Fuel does not burn optimally
Bardahl recommends: Bardahl Water Remover.
This may indicate water in the fuel tank. Bardahl Water Remover is a fuel additive that removes moisture/condensation from the fuel. Suitable for both petrol and diesel engines.
The advice is to put Water Remover into the fuel tank first and then fill up with fuel. This immediately creates a homogeneous mixture of the additive and fuel.
Want to buy Bardahl Water Remover?
Read more about Bardahl Water Remover (item no. 1082)
- Having the fuel system professionally cleaned
Bardahl recommends: Bardahl Fuel System Cleaning.
The engine is cleaned using a specially developed additive: Professional Diesel Injector Cleaner. This cleaner removes deposits (varnish, carbon residues, etc.) in and around the injection system, injectors, combustion chamber and valves.
Thorough cleaning of the fuel system allows the engine to work more efficiently.
With noticeable results:
- improved engine performance,
- reduced emissions of harmful substances
- reduced fuel consumption.
- The complete cleaning treatment helps expensive engine components last longer.
Want to have the fuel system professionally cleaned?
Find Bardahl Fuel System Service Centres near you.
Oil additives (engine)
- Preventing turbocharger problems
Bardahl recommends: Bardahl Oil Booster + Turbo Protect.
Turbochargers are a sensitive engine component. If properly lubricated, they need not cause problems. Good engine oil and sufficient lubrication contribute to effective cleaning.
However, the quality of every engine oil decreases over time. To maintain the oil quality, Bardahl recommends using Bardahl Oil Booster + Turbo Protect between two oil changes.
Note: This oil additive is suitable for cars with and without a turbocharger.
Want to buy Bardahl Oil Booster + Turbo Protect?
Read more about Bardahl Oil Booster + Turbo Protect (item no. 11109)
- Providing maximum turbocharger protection
Bardahl recommends: Bardahl Oil Booster + Turbo Protect.
Turbochargers are a sensitive engine component. If properly lubricated, they need not cause problems. Good engine oil and sufficient lubrication contribute to effective cleaning.
However, the quality of every engine oil decreases over time. To maintain the oil quality, Bardahl recommends using Bardahl Oil Booster + Turbo Protect between two oil changes.
Note: This oil additive is suitable for cars with and without a turbocharger.
Want to buy Bardahl Oil Booster + Turbo Protect?
Read more about Bardahl Oil Booster + Turbo Protect (item no. 11109)
- Alternative to topping up engine oil
Bardahl recommends: Bardahl Oil Booster + Turbo Protect.
Good engine oil and sufficient lubrication contribute to effective cleaning. However, the quality of every engine oil decreases over time. To maintain this oil quality, Bardahl recommends adding Bardahl Oil Booster + Turbo Protect between two oil changes.
Want to buy Bardahl Oil Booster + Turbo Protect?
Read more about Bardahl Oil Booster + Turbo Protect (item no. 11109)
- Topping up engine oil
Bardahl engine oil:
Good engine oil and sufficient lubrication contribute to effective cleaning. Bardahl offers a complete range of engine oils.
Want to buy Bardahl engine oil?
Want to buy Bardahl classic engine oil?
- Internal engine contamination after a repair
Bardahl recommends: Bardahl Oil Flush.
Bardahl Oil Flush cleans the engine and improves/restores engine performance. It also cleans piston rings, valve lifters and sticking valves. The engine oil cleaner dissolves gum and varnish, keeping the deposits suspended in the oil.
Want to buy Bardahl Oil Flush?
Read more about Bardahl Oil Flush (item no. 1032B)
- Oil leakage
Bardahl recommends: Bardahl Oil Stop Leak.
Oil leakage often indicates leaking/dried-out/torn seals. Bardahl Engine Stop Leak (Oil Stop Leak) is a special oil additive for reducing or preventing oil leaks. It restores seals and piston rings to good condition.
Using Engine Stop Leak causes seals to swell and seal, stopping oil leakage. The oil filter will not become blocked in the process.
Note: Cracked or damaged seals, and paper gaskets, cannot be sealed.
Want to buy Bardahl Engine Stop Leak?
Read more about Bardahl Engine Stop Leak (item no. 1107B)
- Dried-out and hardened seals
Bardahl recommends: Bardahl Oil Stop Leak.
Bardahl Engine Oil Stop Leak allows seals to swell and restores piston rings to good condition. The oil filter will not become blocked in the process.
Note: Cracked or damaged seals, and paper gaskets, cannot be sealed.
Want to buy Bardahl Engine Oil Stop Leak?
Read more about Bardahl Engine Oil Stop Leak (item no. 1107B)
- Hardened oil seals
Bardahl recommends: Bardahl Engine Oil Stop Leak.
Bardahl Engine Oil Stop Leak makes hardened oil seals flexible again. It restores seals and piston rings to good condition.
Using Engine Oil Stop Leak causes seals to swell and seal, stopping oil leakage. The oil filter will not become blocked in the process.
Want to buy Bardahl Engine Oil Stop Leak?
Read more about Bardahl Engine Oil Stop Leak (item no. 1107B)
- Black exhaust smoke
Bardahl recommends: Bardahl No Smoke.
Excessive exhaust smoke is a sign that engine oil is burning in the combustion chamber and the engine is consuming oil. Bardahl No Smoke (oil stabiliser) improves the seal between the piston and cylinder wall, improves compression and reduces exhaust smoke and oil consumption.
Want to buy Bardahl No Smoke?
Read more about Bardahl No Smoke (item no. 2116US)
- Engine consumes too much oil
Bardahl recommends: Bardahl B2 Oil Treatment.
Bardahl B2 is an oil stabiliser that reduces oil consumption and restores compression. This oil additive also reduces wear and internal friction.
Want to buy Bardahl B2 Oil Stabiliser?
Read more about Bardahl B2 Oil Treatment (item no. 01001)
- Engine has insufficient compression
Bardahl recommends: Bardahl B2 Oil Treatment.
Bardahl B2 Oil Stabiliser reduces oil consumption and restores compression. This oil additive also reduces wear and internal friction.
Want to buy Bardahl B2 Oil Stabiliser?
Read more about Bardahl B2 Oil Treatment (item no. 01001)
Oil additives (gearbox)
- Power steering servo leaks oil
Bardahl recommends: Bardahl Power Steering Stop Leak.
You can, of course, replace the power steering unit immediately, but there is an alternative.
Bardahl Power Steering Stop Leak causes the seals in the power steering unit to swell. This stops and prevents oil leakage. It removes internal gum and varnish, as well as operating noise and vibration.
Note: Cracked or damaged seals, and paper gaskets, cannot be sealed.
Want to buy Bardahl Power Steering Stop Leak?
Read more about Bardahl Power Steering Stop Leak (item no. 1755)
- Manual gearbox shifts poorly; gearboxes also wear.
Bardahl recommends: Bardahl Manual Gearbox Additive.
Bardahl Manual Gearbox Additive adds an extreme-pressure additive to the gearbox oil to reduce friction. Use this oil additive in place of 5 to 10% of the gearbox oil. Not suitable for ATF, LS or overdrives.
Want to buy Bardahl Manual Gearbox Additive?
Read more about Bardahl Manual Gearbox Additive (item no. 1604)
- Manual gearbox leaks oil
Bardahl recommends: Bardahl Manual Gearbox Stop Leak.
Oil leakage often indicates leaking/dried-out/torn seals. Bardahl Manual Gearbox Stop Leak is a special oil additive for reducing or preventing oil leaks. It causes seals to swell again, stopping oil leakage.
Note: Cracked or damaged seals, and paper gaskets, cannot be sealed.
Want to buy Bardahl Manual Gearbox Stop Leak?
Read more about Bardahl Manual Gear Box Stop Leak (item no. 1756)
- Differential leaks oil
Bardahl recommends: Bardahl Manual Gearbox Stop Leak.
The cause may be a leaking seal. Manual Gear Box Stop Leak restores seals without dismantling. It causes the seal to swell again, stopping oil leakage. Naturally, it will not work if the seal is torn, defective or made of paper.
Want to buy Bardahl Manual Gearbox Stop Leak?
Read more about Bardahl Manual Gearbox Stop Leak (item no. 1756)
- Manual gearbox has dried-out/hardened seals
Bardahl recommends: Bardahl Manual Gearbox Stop Leak.
Bardahl Manual Gearbox Stop Leak allows seals to swell so that leaks can be stopped.
Note: Cracked or damaged seals, and paper gaskets, cannot be sealed.
Want to buy Bardahl Manual Gearbox Stop Leak?
Read more about Bardahl Manual Gearbox Stop Leak (item no. 1756)
- Hardened oil seals in a manual gearbox
Bardahl recommends: Bardahl Manual Gearbox Stop Leak.
Bardahl Manual Gear Box Stop Leak makes hardened oil seals flexible again.
Want to buy Bardahl Manual Gearbox Stop Leak?
Read more about Bardahl Manual Gear Box Stop Leak (item no. 1756)
- Automatic transmission leaks oil
Bardahl recommends: Bardahl Automatic Transmission Stop Leak.
Oil leakage often indicates leaking/dried-out/torn seals. Bardahl Automatic Transmission Stop Leak is a special oil additive for reducing or preventing oil leaks.
It causes seals to swell again, stopping oil leakage.
Note: Cracked or damaged seals, and paper gaskets, cannot be sealed.
Want to buy Bardahl Automatic Transmission Stop Leak?
Read more about Bardahl Automatic Transmission Stop Leak (item no. 6018US)
- Automatic transmission has dried-out/hardened seals
Bardahl recommends: Bardahl Automatic Transmission Stop Leak.
Bardahl Automatic Transmission Stop Leak allows seals to swell so that oil leaks can be stopped.
Note: Cracked or damaged seals, and paper gaskets, cannot be sealed.
Want to buy Bardahl Automatic Transmission Stop Leak?
Read more about Bardahl Automatic Transmission Stop Leak (item no. 6018US)
- Hardened oil seals in an automatic transmission
Bardahl recommends: Bardahl Automatic Transmission Stop Leak.
Bardahl Automatic Transmission Stop Leak makes hardened oil seals flexible again.
Want to buy Bardahl Automatic Transmission Stop Leak?
Read more about Bardahl Automatic Transmission Stop Leak (item no. 6018US)
Radiator additives
- Radiator leaks coolant
Bardahl recommends: Bardahl Radiator Stop Leak.
Bardahl Radiator Stop Leak lets you easily seal a small leak in the cooling system. You can also use it to protect the radiator against coolant leaks as a preventive measure.
Want to buy Bardahl Radiator Stop Leak?
Read more about Bardahl Radiator Stop Leak (item no. 14001)
- Protecting the radiator against leaks as a preventive measure
Bardahl recommends: Bardahl Radiator Stop Leak.
Bardahl Radiator Stop Leak lets you easily protect the radiator against leaks as a preventive measure.
Want to buy Bardahl Radiator Stop Leak?
Read more about Bardahl Radiator Stop Leak (item no. 14001)
- Cleaning the radiator
Bardahl recommends: Bardahl Radiator Cleaner.
Bardahl Radiator Cleaner lets you easily clean the radiator. It cleans the entire cooling system of harmful deposits such as rust and limescale.
Radiator Cleaner prevents the engine from overheating as a result of cooling system contamination. The product is also safe to use in aluminium engine blocks.
Want to buy Bardahl Radiator Cleaner?
Read more about Bardahl Radiator Cleaner (item no. 14010)
Squealing brakes
- Brakes squeal and/or vibrate
Squealing and vibration can occur when brake pads are too porous. Moisture, friction material and air can move freely through them. Bardahl Brake Noise Silencer gives the friction material on the brake pad a completely smooth coating.
This solution can be used for both disc brakes and drum brakes. Bardahl Brake Noise Silencer is suitable for all types of brakes, including those on bicycles, motorcycles, cars and all other vehicles.
For more information, complete the contact form and we will handle your enquiry promptly and professionally. You can also contact us directly by telephone on 078-651 23 22.