Engine oils, transmission fluids, coolants and brake fluids for passenger cars, trucks, buses and motorcycles.
Low-friction formula that helps cut fuel consumption in hybrids and modern direct-injection engines.
Low-SAPS chemistry that protects particulate filters and catalytic converters.
High-temperature strength for turbocharged engines driven hard in summer heat.
Everyday protection for petrol and CNG engines, including locally assembled models.
Thicker oil film that reduces oil burning and leaks in older, high-mileage engines.
Diaco passenger car motor oils keep modern engines clean, protected and efficient — from low-viscosity 0W-20 for hybrids to robust 20W-50 for older, high-mileage cars.
Every grade is blended from carefully selected base oils and a balanced additive package that controls deposits, neutralises acids and protects against wear during cold starts — the moment when most engine wear happens.
Every grade meets recognised API, ACEA or ILSAC categories and is chosen for the cars on Iran's roads: from imported turbocharged petrol engines to locally assembled models running on CNG.
Our flagship truck oil for Euro V/VI engines with DPF and EGR systems.
Better cold-start flow for fleets operating in northern and mountain regions.
Robust mineral oil for older trucks and buses in hot southern provinces.
Monograde oil for stationary diesel generators and older agricultural engines.
Built for engines that never get a day off. Diaco heavy-duty oils control soot, resist oxidation and extend drain intervals for truck fleets, buses and construction equipment.
High-load diesel engines produce soot, acids and heat that break down ordinary oils. Our heavy-duty range uses a high total base number and robust dispersants to hold soot in suspension and keep liners, rings and turbochargers clean.
From modern Euro V and Euro VI trucks with after-treatment systems to older fleets running on regional diesel, we offer grades that balance protection with cost per kilometre.
Shear-stable formula for sport and touring bikes with wet clutches.
The everyday choice for 125–200 cc commuter and delivery motorcycles.
Low-smoke 2-stroke oil for premix and oil-injection systems.
Low-friction oil for automatic scooters with dry CVT clutches.
Motorcycle engines rev higher, run hotter and often share their oil with the gearbox and clutch. Diaco motorcycle oils are formulated for exactly that.
Our 4-stroke oils meet JASO MA/MA2 friction requirements so wet clutches engage smoothly without slipping, while shear-stable polymers keep the oil in grade even after thousands of kilometres of gearbox use.
For 2-stroke engines, our low-smoke JASO FD oil burns cleanly and protects pistons and exhaust ports from carbon build-up.
Multipurpose EP gear oil for differentials and manual gearboxes.
Heavy gear oil for truck axles and heavily loaded final drives.
Synthetic gear oil for smooth cold shifting and extended drain intervals.
For automatic transmissions and power steering systems specifying Dexron III.
One fluid for most Asian, European and American automatic gearboxes.
Smooth shifts and quiet axles start with the right fluid. Our gear oils and ATFs protect gears, bearings and synchronisers under shock loads and high temperatures.
Extreme-pressure additives form a protective film on gear teeth when loads spike, preventing scuffing and pitting. Our synthetic grades extend change intervals and improve cold-weather shifting.
Diaco automatic transmission fluids deliver consistent friction for smooth shift quality, with oxidation resistance that keeps valve bodies clean.
Silicate-free concentrate that protects aluminium radiators for up to five years.
Pre-diluted with demineralised water — pour straight in, no mixing needed.
High boiling point for ABS-equipped cars and hard braking in mountain roads.
Reliable brake and clutch fluid for vehicles specifying DOT 3.
Engine temperature and braking performance are safety-critical. Diaco coolants and brake fluids are built to work from Tabriz winters to Bandar Abbas summers.
Our organic acid technology (OAT) coolants protect aluminium, cast iron and copper components from corrosion for up to five years, without silicates that can clog radiators.
Diaco DOT 3 and DOT 4 brake fluids have high boiling points to prevent vapour lock under hard braking and protect hydraulic components from corrosion.
No products match your search.
Typical values are for guidance only and do not constitute a specification. Request the technical data sheet for guaranteed limits.
Tell us what you need — we reply within one working day.