Premium oil built to German engineering standards. For turbocharged, direct-injection and start-stop engines. Five categories — from a single supplier.
Engine and diesel oil. Transmission, brake fluid, hydraulics. Pack sizes from 1 to 20 litres.
Enter your vehicle details and see the matching products.
Six sectors, each with its own duty cycle and its own requirements.
The result is for guidance only. The final decision rests on the vehicle manufacturer's specification. The service book requirement always takes priority.
The core fluids in one brand — from the engine to the hydraulics. 15 articles in total, in 1–20 L packs.
The core range for petrol and diesel engines in passenger cars: it lubricates, carries heat away, holds soot in suspension and protects against corrosion. In turbocharged and direct-injection engines, heat stability matters most.
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A diesel produces more soot and the oil has to hold it. Vehicles with a particulate filter (DPF) need a low-ash oil, otherwise the filter fills with ash.
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API GL oils for manual gearboxes and axles, ATF for automatics. Something 'similar' will not do: gears engage late, the box jolts and the teeth wear.
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Brake fluid draws moisture from the air and its boiling point falls. Under hard braking a vapour lock lets the pedal go soft. It is replaced by time, not by mileage.
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For forklifts, excavators, tractor hydraulics and industrial equipment. The grade (HLP or HVLP) and the ISO VG viscosity are set by the equipment manual.
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Both come from the Molygreen range; the difference is viscosity. Engine age and load decide which.
The number before the 'W' is cold flow; the second number is the thickness at 100 °C.
| Property | 5W-30 | 10W-40 |
|---|---|---|
| Who for | Modern, turbocharged and start-stop engines. | High-mileage engines, older designs and engines working in hard conditions. |
| Cold start | Faster. Preferable in a cold climate. | Slower. Sufficient in a temperate climate. |
| Film when hot | Thinner, less friction. | Thicker; holds pressure in a worn engine. |
| What to check | The manufacturer approval and the API/ILSAC or ACEA grade. | The manufacturer requirement and the ACEA/API grade. Engine condition and mileage also count. |
Under SAE J300 a 5W oil is still pumpable at −35 °C and a 10W oil at −30 °C; the cranking test (CCS) runs at −30 and −25 °C. The colder it is, the sooner a 5W arrives — and those first seconds are when an engine wears most.
Which oil is right for you?
Find oil for my vehicleA modern oil does more than lubricate: it cleans, cools and protects against corrosion.
It forms a thin film between moving parts. Metal does not touch metal and wear drops.
It carries heat away from pistons, bearings and the valve train, where coolant never reaches.
It holds soot, deposits and metal particles in suspension and carries them to the oil filter.
It forms a micro-seal between the piston ring and the cylinder wall, so compression is kept.
It neutralises the acids and condensation formed during combustion.
The engine shrinks, power rises, the interval lengthens — and the load falls on the oil.
A particulate filter traps over 90 % of the soot and burns itself clean once the exhaust gas reaches about 600 °C. In town and on short trips it never gets that hot.
The shaft spins very fast and gets hot. The oil must withstand the heat without forming coke.
More fuel reaches the oil. The oil thins and the film gets weaker.
At every stop the oil pressure drops to zero; on restart the bearing runs in boundary friction until pressure is back.
A low-ash oil is needed, otherwise the filter fills with ash.
The engine never reaches operating temperature. Condensation and fuel do not evaporate and the oil ages faster.
The norm for average conditions is 10,000–15,000 km, or once a year. An extended interval comes only from a factory approval.
Leave it too long and compression and power fall. Consumption rises, deposits build up, the oil film thins and the engine wears.
Constant short trips: under 8 km in normal weather, under 16 km in the cold.
Constant city traffic and a lot of idling.
Dusty, muddy or uneven roads. Salted roads in winter.
Towing a trailer, constant heavy loads.
Mountain roads, constant climbs and descents.
Taxi, haulage and other commercial duty.
One important note: If the oil level rises on its own, fuel or water is getting in. Check it at once.
Find oil for my vehicleA fake is not obvious by sight. Check the two security features on the canister when you buy.
When you open the cap, the foil must be intact. Pierced or re-glued foil means the product has been opened.
The seal breaks the first time it is opened and cannot be closed again.
Is the cap seal intact, with no sign of tearing?
Is the neck foil glued down and unpierced?
Is the label applied straight, with crisp type and colour?
Are the canister shape, seams and colour consistent?
Was it bought from an official point of sale?
To top up on the road; keeps in the boot.
On most passenger cars a full change takes 3.5–5.5 litres.
One change plus a little in reserve. Convenient on a shop shelf.
Sized for a day's work. One order lasts a long time.
A large volume, drawn with a pump in workshops and plants.
Give the make, model and engine. The list of matching articles appears automatically.
Compare the requirement in your service book with the article specification. Both the viscosity and the quality class must match.
Check the foil and the seal on the canister. Both must be intact.
