5W-30 Oils
Our 5W-30 engine oils. Your handbook gives the grade and specification your engine needs.
Diesel Gard 5W-30 MVM
A premium fully synthetic diesel engine oil engineered for modern commercial vehicles and heavy-duty diesel engines.
QS 5W-30 DX
A high-performance fully synthetic engine oil designed to deliver superior protection and efficiency for modern petrol and diesel engines.
QS 5W-30 FJL
A fully synthetic engine oil specially formulated for fuel-efficient passenger cars.
QS 5W-30 SP
A fully synthetic engine oil engineered for modern petrol and diesel engines, including those fitted with turbochargers and after-treatment systems.
QS 5W-30 VMB
A fully synthetic engine oil engineered to meet the demanding requirements of modern vehicles.
What 5W-30 means
5W-30 is an SAE viscosity grade. The first number, followed by W for winter, shows how easily the oil flows when cold: the lower the number, the faster it reaches the engine at start-up. The second number shows how thick the oil stays at normal running temperature: the higher the number, the thicker the oil.
So a 5W-30 flows more easily from cold than a 10W-30, and is thinner when hot than a 5W-40.
Use a grade your car's manufacturer lists, with the specification it asks for as well: oils of the same grade can meet different specifications.
More in our guide to what the numbers on engine oil mean.