If your car needs 10W-30 engine oil, Castrol offers a range of options, all of which flow like 10 Weight oil when cold, and 30 Weight oil at full engine operating temperature.
Castrol offers a broad range of 10W-30 engine oils, including premium synthetic technology and conventional, meeting the needs of both drivers and vehicle manufacturers.
Castrol MAGNATEC is a premium synthetic technology 10W-30 that offers superior wear protection. Castrol GTX 10W-30 Double-Action formula has been engineered to clean away old sludge while preventing new sludge formation. Castrol GTX Ultra Clean 10W-30, If keeping your engine clean is important to you, it's good to know that no other oil keeps engines cleaner.
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 10W-60 viscosity and also show the manufacturer specifications details.