Deposits on diesel injection nozzles can compromise fuel delivery and combustion, leading to reduced performance and increased fuel consumption. Keeping these components clean is an important part of managing fuel costs and maintaining equipment reliability, whether an engine powers a bakkie, a tractor or construction machinery.
Liqui Moly’s Super Diesel Additive and Bakkie Series Complete Diesel System Cleaner tackle deposits and improve ignition quality, helping vehicles and equipment maintain performance. Their cleaning and protective functions make fuel-system treatment a practical addition to routine maintenance in many industries, including mining, quarrying, construction, agriculture and transport.
“Fuel-system care is relevant both to the cost of daily operation and the condition of components expected to remain in service over many years,” explains Richard Jansen van Rensburg, Sales Manager, Liqui Moly South Africa. “Cleaning these deposits and preventing further build-up helps the fuel system operate optimally, making fuel treatment a practical addition to routine maintenance.”
Liqui Moly Super Diesel Additive combines cleaning and dispersing agents with cetane improvers and protective ingredients. It keeps injection nozzles clean and prevents injector needles from gumming up, while improving the ignition behaviour of the diesel. This product, which has been formulated especially for modern diesel engines and today’s low-sulphur fuels, also enhances fuel lubrication and protects the injection system against corrosion and wear.
The cetane number describes how readily diesel ignites under compression. Increasing it promotes smoother engine operation and better combustion, particularly during cold starts. Together with a clean injection system, improved ignition quality helps maintain fuel efficiency. The extent of any saving depends on engine condition, operating duty and fuel quality, rather than a fixed percentage applicable to every vehicle.
There is also a mechanical benefit. Injection pumps and injectors rely on the diesel passing through them for lubrication. Super Diesel Additive improves the lubricating properties of low-sulphur fuel, helping protect these components against wear. This product’s corrosion protection provides a further defence for the fuel system.
For operators whose equipment is used intermittently or seasonally, Super Diesel Additive can also be used for engine preservation during extended periods of inactivity, following the manufacturer’s specific instructions.
Where deposits are already affecting performance, the Liqui Moly Bakkie Series Complete Diesel System Cleaner removes deposits from injection nozzles and the combustion chamber. The cleaner optimises combustion and helps restore original engine performance impaired by deposit build-up. It also boosts cetane number, reduces diesel knocking and improves emissions values.
The Bakkie Series was developed by Liqui Moly for the requirements of larger vehicles. The diesel cleaner provides a convenient option for bakkies and SUVs with larger fuel tanks and is suitable for all diesel engines, including common-rail systems and engines with or without diesel particulate filters.
Fuel quality is another important consideration. The cleaning, ignition and lubrication benefits of these products should not be interpreted as making adulterated diesel safe or restoring compromised fuel to specification.
Liqui Moly packaging caters for individual motorists and bulk users. Super Diesel Additive is available in 250 ml consumer cans and 205-litre drums. The bulk range also includes the separate concentrated formulation, Pro-Line Super Diesel Additive K, in 20-litre containers. Bakkie Series Complete Diesel System Cleaner is supplied in 500 ml cans.
A 250 ml can of Super Diesel Additive treats up to 75 litres of diesel, while the 500 ml Bakkie Series cleaner treats up to 115 litres. Each product must be dosed according to its specific instruction.
For a single vehicle or a working fleet, selecting the appropriate formulation and dosage provides a practical means of caring for the injection system, maintaining combustion efficiency and protecting fuel-system components over time.
Liqui Moly specialists offer technical advice on product selection and application. https://shop.liqui-moly.co.za/product-category/shop/automotive/additives/fuel-additives/diesel-additives/





