

DT5 Plus Diesel Treatment (12 x 1L)
This highly concentrated fuel additive is superior in its ability to help improve performance, clean injectors, reduce fuel consumption, exhaust smoke and sludge, and extend fuel filter life. DT5 Plus Diesel Treatment is formulated for use in all diesel engines, 4-stroke, 2-stroke, automotive, Marine and Stationary. Regular use of DT5 in your vehicle can help improve performance, reduce fuel consumption, reduce maintenance & downtime, clean injectors, control bacteria in the fuel system, prevent rust and sludge in fuel tanks and reduce exhaust smoke and emissions. Over 41 years of experience and thousands of customers prove that PT5 is an effective fuel additive with measurable results.
DT5 is effective by using a multi-pronged approach including surfactant, detergent, poly butane ashless lubricant, cold flow improver and combustion modifier. Surfactant controls water while reducing rust, sludge, bacteria and fungi. Detergent helps clean fuel systems, pumps, injectors, cylinders and exhaust to remove tar, wax, varnish, gum and carbon. Poly butane ashless lubricant lubricates vital components in pumps, injectors and upper engine area to reduce wear that is associated with low sulphur diesel fuel. Cold flow improver helps prevent the formation of wax at low and cold ambient temperatures to assist with easier starting. Finally, combustion modifier smoothes the combustion process to reduce emissions, improve power and performance whilst saving fuel.
Add 1 mL DT5 to 1 litre of diesel
DT5 will not correct mechanical defects
DT5 Plus is suitable for existing light and Ultra Low Sulphur Diesel (ULSD) in the following types of Diesel Engines: 4-Stroke, 2-Stroke, Automotive, Marine and Stationary. It is beneficial for all naturally aspirated and turbo-charged engines.
Individual vehicle:
For use in individual vehicles or engines where diesel fuel is purchased from service stations, DT5 Plus should be added directly to the vehicle fuel tank preferably just before filling. The recommended treatment ration is 20mL of DT5 Plus to 20 litres of fuel.
Bulk storage:
When used in bulk storage tanks at the time of refilling, add 1 litre of DT5 Plus for each 1000 litres of fuel. The DT5 Plus will quickly disperse throughout the tank. Continuous usage can control water and future condensation and remove old deposits from vehicle engines.
I’m not a ‘car person’ - can I still use fuel additives?
- Yes. Our Pro-Ma Fuel Additives are specifically designed to be simple and easy to use. Each fuel additive has simple instructions on how to use the product to save money on fuel, get more kilometres out of your tank, and get your car serviced less often.
Do you have an additive designed for petrol engines?
- Yes. The PT5 Plus Petrol Treatment with Ethanol Defence is specifically designed for diesel engines. You can shop PT5 here.
Why DT5?
For 40+ years the DT5 Plus Diesel Treatment has been delivering proven results to thousands of customers all over the world. This innovative formula is highly concentrated and science backed, proven to be extremely effective in producing significant savings in areas of fuel consumption maintenance, downtime and repair costs when used consistently.
- Surfactant
Breaks surface tension of water, controls sludge, fungus and aids in its removal from the fuel system.. - Detergent
Helps clean fuel systems, cylinders and exhaust. - Poly Butane Ahless Lubricant
Assists in lubrication of vital components in pumps, injectors and upper engine area to reduce wear that could be associated with low and ultra low sulphur diesel fuel. - Cold Flow Improver
Enhances burn regardless of fuel octane rating. Reduces pinging and detonation. - Combustion Modifier
Helps prevent the formation of wax at low ambient temperatures for easier starting. - Combustion Modifier
Helps smooth flame progression for more complete combustion of fuel and reduction of emissions.
Anything else you
need to
know?
DT5 Plus is a balanced compound of ashless organic materials in a pure hydrocarbon solvent. DT5 Plus is completely soluble in diesel fuel.
U.S. TESTING COMPANY, INC. Report #77147 (#900 Performance Diesel Treatment)
Summary: ‘The material under the conditions of the test, manifested itself to be non-corrosive, volatile and without any significant acidic or alkaline properties.’
The Regular Use of DT5 Plus can:
-
Cleans
DT5 Plus contains a detergent which is designed to help remove diesel fuel and oil related deposits such as gums, varnishes, and carbon residues. Continuous use of DT5 Plus can provide engine deposit control by removing and inhibiting the build up of deposits in the combustion chamber, ring grooves, valves, pump and injectors. This can result in prolonged engine and component life, increased operating efficiency and decreased fuel consumption.
-
Disperses
DT5 Plus contains a dispersant that is designed to break down fuel related sludge and oxidation residues into small particles that are less than a micron in diameter. Because of the dispersant action, fuel filter and injector blockages are minimised and filter life is extended.
-
Controls wax
DT5 Plus contains a Cold Flow Improver. The pour point is the temperature at which wax laden fuel will barely flow. The wax actually solidifies several degrees below the pour point. The pour point is frequently used as an indicator of fuel performance in extreme temperatures. The criteria used in evaluating the effectiveness of a flow improver in fuel at temperatures near the pour point is referred to as the ‘Pumpability Test.’ In a laboratory applying the ‘Pumpability Test’ to the DT5 Plus, the flow improver lowered the pour point by 9°C to 17°C (17°F to 31°F) in three different fuels. The result will vary with the quantity of ‘kerosene’ in the fuel. The Cold Flow Improver will reduce or eliminate the tendency for fuel filters to block fuel flow in wax laden fuel at low ambient temperatures.
-
Controls water
DT5 Plus contains a water control agent that helps to remove water from vehicle fuel tanks, lines and bulk storage tanks. The control agent breaks water droplets into particles that are approximately 1 micron in diameter and disperses them into the fuel. This water passes through the entire fuel system in microscopic form and is converted to steam in the combustion chamber. When water is removed from the fuel system, rust is prevented and microbiological (algae) growth at the water-fuel interface is controlled.
-
Improves power and economy
DT5 Plus contains a Combustion Modifier which enables the fuel to burn more completely in the cylinders. This reduces or eliminates black smoke from the exhaust and results in increased power and economy by converting more of the heat energy in the fuel into useful work. Government Department Certified Tests have shown a 9.5% horsepower improvement, while delivering a 10% improvement in fuel economy. No special tuning of the engine is required when using DT5 Plus. In addition to the improvement to the combustion area, crankcase contamination is greatly reduced by control of water caused through condensation. The reduction of unburnt carbon and the freeing of piston rings in their grooves further reduces contamination accrued during or from blow-by, leaving the crankcase clear of sludge and other deposits. These results have been noted in engines dismantled and checked after exceeding 300,000 km.
Contains petroleum distillates. Do NOT store near heat, sparks or flame. Wash with soap and water if product contacts skin. KEEP OUT OF REACH OF CHILDREN. A Material Safety Data Sheet is available from Pro-Ma Systems.
Combustible. Harmful or fatal if swallowed. Contains petroleum distillates. If swallowed, do NOT induce vomiting. Call a doctor immediately.
NOTE: DT5 PLUS CONTAINS NO METHANOL, ETHANOL OR ISOPROPANOL ALCOHOLS.
DT5 Plus is a balanced compound of ashless organic materials in a pure hydrocarbon solvent. DT5 Plus is completely soluble in diesel fuel.
U.S. TESTING COMPANY, INC. Report #77147 (#900 Performance Diesel Treatment)
Summary: ‘The material under the conditions of the test, manifested itself to be non-corrosive, volatile and without any significant acidic or alkaline properties.’
The Regular Use of DT5 Plus can:
-
Cleans
DT5 Plus contains a detergent which is designed to help remove diesel fuel and oil related deposits such as gums, varnishes, and carbon residues. Continuous use of DT5 Plus can provide engine deposit control by removing and inhibiting the build up of deposits in the combustion chamber, ring grooves, valves, pump and injectors. This can result in prolonged engine and component life, increased operating efficiency and decreased fuel consumption.
-
Disperses
DT5 Plus contains a dispersant that is designed to break down fuel related sludge and oxidation residues into small particles that are less than a micron in diameter. Because of the dispersant action, fuel filter and injector blockages are minimised and filter life is extended.
-
Controls wax
DT5 Plus contains a Cold Flow Improver. The pour point is the temperature at which wax laden fuel will barely flow. The wax actually solidifies several degrees below the pour point. The pour point is frequently used as an indicator of fuel performance in extreme temperatures. The criteria used in evaluating the effectiveness of a flow improver in fuel at temperatures near the pour point is referred to as the ‘Pumpability Test.’ In a laboratory applying the ‘Pumpability Test’ to the DT5 Plus, the flow improver lowered the pour point by 9°C to 17°C (17°F to 31°F) in three different fuels. The result will vary with the quantity of ‘kerosene’ in the fuel. The Cold Flow Improver will reduce or eliminate the tendency for fuel filters to block fuel flow in wax laden fuel at low ambient temperatures.
-
Controls water
DT5 Plus contains a water control agent that helps to remove water from vehicle fuel tanks, lines and bulk storage tanks. The control agent breaks water droplets into particles that are approximately 1 micron in diameter and disperses them into the fuel. This water passes through the entire fuel system in microscopic form and is converted to steam in the combustion chamber. When water is removed from the fuel system, rust is prevented and microbiological (algae) growth at the water-fuel interface is controlled.
-
Improves power and economy
DT5 Plus contains a Combustion Modifier which enables the fuel to burn more completely in the cylinders. This reduces or eliminates black smoke from the exhaust and results in increased power and economy by converting more of the heat energy in the fuel into useful work. Government Department Certified Tests have shown a 9.5% horsepower improvement, while delivering a 10% improvement in fuel economy. No special tuning of the engine is required when using DT5 Plus. In addition to the improvement to the combustion area, crankcase contamination is greatly reduced by control of water caused through condensation. The reduction of unburnt carbon and the freeing of piston rings in their grooves further reduces contamination accrued during or from blow-by, leaving the crankcase clear of sludge and other deposits. These results have been noted in engines dismantled and checked after exceeding 300,000 km.
Contains petroleum distillates. Do NOT store near heat, sparks or flame. Wash with soap and water if product contacts skin. KEEP OUT OF REACH OF CHILDREN. A Material Safety Data Sheet is available from Pro-Ma Systems.
Combustible. Harmful or fatal if swallowed. Contains petroleum distillates. If swallowed, do NOT induce vomiting. Call a doctor immediately.
NOTE: DT5 PLUS CONTAINS NO METHANOL, ETHANOL OR ISOPROPANOL ALCOHOLS.
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