If your car requires a 5W-40 engine oil, Castrol offers a full range of options to meet the needs of every driver and vehicle manufacturer.
5W-30 engine oil is one of the most common viscosity grades and is available from Castrol in full synthetic and part synthetic options.
There are two things you need to know to find the right oil for your vehicle 1) the viscosity, 2) the manufacture specification requirements. The products on this page are all 5W-30 viscosity and also show the manufacturer specifications details