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250ml / 1000ml

VB35
ALL SYSTEMS CLEANER
VB35 can be used in a variety of systems, such as: fuel systems (Gasoline, Diesel, LPG), engine, automatic transmission, power steering, differential and manual gear, brake, A/C, etc.
A) Injector and fuel line cleaning
Cleaning is possible regardless of the type of fuel system, including gasoline, diesel and LPG systems, using dedicated equipment and tools. VB35 helps remove impurities from fuel lines and carbon deposits from the inside and outside of injectors.
B) Water/moisture elimination
It breaks down water and moisture into microscopic particles and, together with EP lubricating components, helps remove moisture from the system during the cleaning process.
C) Anti freeze protection (enhance cloud point)
By managing water and moisture in the fuel system, VB35 helps prevent freezing and supports smooth operation and easier starting at low temperatures.
D) Lubrication cleaning – oil flush
It cleans and disperses sludge and carbon deposits in the engine oil line, so that it mixes well with the old oil. It also includes rubber restoration function.
E) Manual transmission, ABS, power steering
Disperses moisture and sediment accumulated in the line. Add 350ml of VB35 for every 4-6 liters of oil. After running it for about 10 minutes or more, drain it and replace it with new oil.

F) Automatic transmission
Add 350ml of VB35 per 10 liters of ATF/CVT/DSG/DCT. Drive the vehicle for at least 10 minutes, and use all gears, then change oil and filter.
G) Cleaning cooling system
It is used to remove oil or grease from the cooling line.
H) Cleaning FAP/DPF filter and catalytic converter
It removes the soot that is blocking the FAP/DPF or the three-way catalyst. Remove the filter from the vehicle, mix a bucket with 175ml of VB35 and 1.5L of water and pour it on the front of the filter. Shake it. (The longer you do it, the better.) Shake well, then drain it, again mix 175ml of VB35 with 1.5L of water, and pour it on the back of the filter, and shake for 30 minutes. After draining, rinse with clean water.
I) Cleaning air conditioner
VB35 removes moisture from the air conditioner line. Add 50-100ml of VB35 into the low pressure line of the air conditioner, operate the air conditioner for at least 10 minutes, and then use a recovery regenerator to exchange it.
- Motorcycles and scooters: 150ml
- Passenger car, van, SUV: 300ml
- Trucks, buses and industrial engines: 900ml
For fuel-system cleaning, use VB35 with dedicated equipment and tools.
Videos about VB35
Water Elimination Test on Engine oil

Sludge Dissolving Test

Brake System Flush(Moisture Elimination)

FAQ about VB35
How can I restore the acceleration?
By cleaning/restoring the compression with VB35, along with cleaning/optimizing the injection with VB01, cleaning/reopening the air intake with VB45, and cleaning/lightening the turbine in the exhaust with VB45.
How can I eliminate moisture and other deposits from the gas circuit on the air conditioning?
Inject 50ml of VB35 into the low pressure circuit, run the system for about 10 minutes at maximum col, eliminate and replace all the refrigerant containing the dissolved deposits.
How can I clean the bearings of the turbo charger?
Add VB35 into the engine oil, which is especially important for the bearings of the turbo charger.
Can I use VB35 in biodiesel engines?
Yes, with the exception of diesel vehicles without delivery pumps.
How can I eliminate black sludge from the engine?
With the right dosage of VB35, you can eliminate any quantity of black sludge from the engine.
How can I solve the problem of black smoke?
Add VB35 into the engine oil, clean the fuel system with VB01 using dedicated equipment, and spray VB45 into the air intake. This will significantly reduce black smoke.
What is the recommended dosage for a bus?
VB01 equipment cleaning treatment: 900ml
Oil: 900ml of VB35 into the engine oil.
Repeat once a year or every 100,000 km (60,000 miles).
What is the recommended dosage for HGV (Heavy Goods Vehicle/Truck)?
VB01 equipment cleaning treatment: 900ml
Oil: 900ml of VB35 into the engine oil.
Repeat once a year or every 100,000 km (60,000 miles).
What is the recommended dosage for a tractor?
VB01 equipment cleaning treatment: 900ml
Oil: 900ml of VB35 into the engine oil.
Repeat once a year or every 100,000 km (60,000 miles).
How can I clean a catalytic converter?
By optimizing/cleaning the compression with VB35 in the engine oil, cleaning/optimizing the injection and fuel system with VB01 using dedicated equipment, and spraying VB45 into the air intake.
How can I clean the combustion chamber?
With VB35, VB01 and VB45, they don’t burn easily, and thus have more time to dissolve the deposits in the combustions chambers and furthermore to also clean the components of the exhaust.
How can I eliminate water/moisture from the fuel tank and from the injection system?
Use VB35 with dedicated equipment and tools to clean the fuel system and injection system. VB35 helps manage water, moisture and deposits accumulated inside the system.
How can I clean the differential?
Add VB35 into the differential oil, drive the vehicle for about 10 minutes, and then replace the oil.
How can I clean the cooler of the EGR-Valve?
Mounted: Add VB35 into the engine oil, clean the fuel system with VB01 using dedicated equipment, and spray VB45 into the air intake.
Dismounted or accessible: Spray VB45 inside the cooler.
How can I clean the EGR-Valve?
Mounted: Add VB35 into the engine oil, clean the fuel system with VB01 using dedicated equipment, and spray VB45 into the air intake.
Dismounted or accessible: Spray VB45 directly on the deposits inside the valve.
Do I need a specific product for FSI engines?
With Smog Doctor, NO. Our products VB35, VB01 and VB45 were specially designed to be used in all kinds of gasoline, diesel, LPG, and Methane engines.
Do any of Smog Doctor products contain a FAP/DPF additive?
No, the FAP/DPF additives are meant to prevent clogging of the filter, but if it is too clogged, and the engine still runs, use VB45; if the engine is not running, use VB35.
How can I clean CRT-Converter?
Fill the CRT with the mixture of 5% of VB35 and 95% H2O (1 liter VB35 and 19 liters of water), give 8 hours of time to dissolve and eliminate the deposits of soot and/or oil and then flush with water, never with high pressure cleaners.
How can I clean the FAP/DPF filter?
If the engine runs: Spray VB45 directly in the filter and force a regeneration.
If the engine doesn’t run: Dismount the filter and fill it with VB35 and water.
Do I have to replace the engine oil filter after cleaning with VB35?
Yes. The filter will be cleaned also by VB35, which will liquefy all the dirt, but the hard particles like metals will be still trapped by the filter.
What happens to the water filter when I clean the system with VB35?
The filter will be cleaned, and the water will be split into microscopic drops covered with lubricants and then taken to the combustion chamber where they will be eliminated. However, it is wise to replace the filter according to maintenance schedule.
What happens to the LPG-filter when I clean the system with VB35?
The filter will be cleaned. If possible, look inside the filter before cleaning with VB35 and look again after cleaning. The filter will appear totally clean. However, it is recommended to replace the filter according to the maintenance schedule.
Does VB35 reduce friction?
Yes, VB35 and VB01 reduce friction as they both contain a protecting lubricant in their formula. Unfortunately, VB45 doesn’t offer this function.
Are Smog Doctor products compatible with seals and gaskets?
VB35 and VB01 are 100% compatible with the Viton-seals and gaskets of the fuel injection systems from any kind of gasoline, diesel, LPG, and Methane engines. VB35 is 100% compatible with seals and gaskets of all oil systems.
Are Smog Doctor products recommended for gasoline engines?
VB01 is compatible with all kinds of gasoline engines, VB35 with almost all, except for carburetor engines.
How can I clean the oil line of a gearbox?
Add VB35 to the gear oil/fluid, drive the vehicle for about 10 minutes using all the gears and then replace oil and filter.
With which product can I eliminate moisture/humidity/water?
VB35 is a cleaner designed to help remove and manage water, moisture and deposits in various systems.
For fuel systems, VB35 is used as part of a cleaning treatment with dedicated equipment and tools. It can also be used in oil, fluid and cooling systems according to the appropriate service procedure.
With which product I can clean the injection?
VB01 provides intensive cleaning of the injection and fuel system, while VB35 helps clean the system and manage water and moisture.
For fuel-system cleaning, use dedicated equipment and tools.
What products can I use for LPG engines?
VB35 can be used for cleaning LPG systems, including the injection system, lines and related components, using dedicated equipment and tools.
Can I inject VB35 into the methane gas tank?
VB35 should not be mixed directly with compressed methane gas.
For methane systems, use a cleaning procedure and dedicated equipment suitable for the specific system design.
Which products can I use on a moped or a scooter?
150ml of VB01 can be used as part of a dedicated equipment cleaning treatment to help restore performance. 300ml of VB35 added to the engine oil can further improve the cleaning effect.
Can I use Smog Doctor products on old vehicles?
Yes. VB01 can be used on various types of vehicles as part of a fuel-system cleaning treatment using dedicated equipment.
VB35 can also be added into the engine oil, except when the vehicle has severely worn piston rings and/or oval cylinders.
What can I do to reduce oil consumption?
Clean the piston rings with VB35. In case the piston rings are worn-out or the cylinders are oval, cleaning of the engine lubricating system will increase the oil consumption and therefore cleaning is recommended only for engines which are dirty and not too worn.
Is it always recommended to clean the piston rings?
If the cylinders didn’t get oval and the piston rings aren’t worn out, it is always recommended to clean the lubricating system in order to optimize the compression and to prevent the oil getting into the combustion chamber and the combustion gasses getting into the oil.
How can I restore the power of the engine?
By optimizing/cleaning the compression with VB35 in the engine oil, cleaning/optimizing the injection and fuel system with VB01 using dedicated equipment, and spraying VB45 into the air intake to clean and optimize the VGT-Turbine.
Can I use VB35 to clean the ABS brake system?
Yes, VB35 will eliminate deposits of old brake fluid and the humidity/water/moisture inside the brake system.
Can I use VB35 to clean the power steering system?
Yes, VB35 will eliminate deposits of old power steering fluid and the humidity/water/moisture inside the power steering system.
How do I clean the fuel pump?
VB01 and VB35 can both be used for fuel-system cleaning.
VB35 helps remove water/moisture and dissolve deposits, while VB01 provides stronger cleaning action for dissolving and removing deposits.
For fuel-system cleaning, use dedicat
What does VB35 clean in the oil pump?
VB35 cleans the oil pump of all lines on any lubricating systems and/or hydraulic systems.
What does “Improve the quantity of the fuel” means?
By cleaning with Smog Doctor, the fuel pump and injectors feed the right quantity of fuel.
What does “Improve the quality of the injection” mean?
By cleaning with Smog Doctor, the fuel is sprayed again correctly, improving the quality of the injection.
How can I eliminate the oil and grease from the cooling system using VB35?
By adding VB35 to clean and hot water in the system and running the engine at higher RPM for a maximum of 10 minutes?
What should I do when the water warning light is on?
If water or moisture is detected in the fuel system, use VB35 as part of a cleaning treatment with dedicated equipment and tools.
VB35 helps disperse and remove moisture and deposits from the system.
Which product is most effective on soot deposits?
VB45 is recommended to directly eliminate soot deposits inside the EGR-Valve, VGT-Turbo Charger, particulate filter FAP/DPF and converter.
For combined cleaning, use VB01 as part of a fuel-system cleaning treatment with dedicated equipment, VB35 in the engine oil, and VB45 by spraying it inside the intake.
How can I eliminate engine choking?
Optimize/clean the compression with VB35 in the engine oil, clean/optimize the injection and fuel system with VB01 using dedicated equipment, and spray VB45 into the air intake to clean the VGT-Turbine.
What should I do if the engine does not start-up easily?
Gasoline and diesel engines: Clean the pump, injectors or carburetors with VB01 using dedicated fuel-system cleaning equipment.
LPG engines: Clean the injection system with VB35 using dedicated equipment and tools.
Methane engines: Clean the injectors and related lines using VB35 with equipment suitable for the system.
How can I restore the maximum speed?
Clean/optimize the injection and fuel system with VB01 using dedicated equipment, use VB35 in the engine oil to optimize/clean the compression, and spray VB45 into the air intake to clean the Turbo Charger.
Does VB35 also eliminate rust?
No, it emulsifies water and eliminates it (which can prevent rust from appear), also dissolves deposits of oil, fat, greases, bitumen, sludge, lacquers, gums, but does not eliminate rust.
Does VB35 eliminate rust from the fuel tank?
No. VB35 does not remove existing rust.
However, during fuel-system cleaning, it helps dissolve deposits caused by fuel degradation and manage water/moisture that may contribute to corrosion.
How can I obtain the maximum torque from my engine?
Clean/optimize the injection and fuel system with VB01 using dedicated equipment, use VB35 in the engine oil to optimize/clean the compression, and spray VB45 into the air intake to clean the Turbo Charger.
How can I clean the turbo charger?
Mounted: Clean the fuel system with VB01 using dedicated equipment, add VB35 into the engine oil, and spray VB45 into the air intake to clean the related turbocharger components.
Dismounted or accessible: Spray VB45 directly inside the turbine.
How can I clean the valve guides?
Add VB35 into the engine oil, drive the vehicle for 20-30 minutes, then change the oil and filter.
How can I eliminate the noise of the hydraulic valve lifters?
If the problem of noise is caused by dirt, VB35 can eliminate the noise by adding VB35 into the engine oil, drive the vehicle for 20-30 minutes, then change oil and filter.
How can I clean the variable valve timing system?
If the VVT makes part of the lubricating system, add VB35 to the engine oil, drive the vehicle for 20-30 minutes, then change the oil and filter.
