Castrol serves every driver through liquid engineering; creating high performance motor oils, lubricants, & fluids, including both synthetic & conventional.

Castrol has a variety of motor oils that meet and exceed a range of specifications, all to meet your vehicle’s specific needs. That is why we have different options for you to choose from, such as Castrol GTX, Castrol Edge, and a range of High Milage products.

Castrol's high quality engine oils, fluids and greases help maintain the reliability and productivity of commercial vehicles.

Castrol products are still marketed under the red, white and green colour scheme that dates from the launch of Castrol motor oil in 1909. Advertisements for Castrol oil historically featured the slogan "Castrol – liquid engineering".

Find the best motor oil for your car with Castrol’s variety of high-quality motor oils, lubricants, and more. With industry-leading engine oils like Castrol GTX, Castrol EDGE, and Euro Car, you can discover the best Castrol oil selection at O’Reilly Auto Parts®.

O'Reilly Auto Parts carries Castrol products. Choose an item or category to find the specific products you know and trust.

Prepare with confidence and ride with carfidence when you choose Castrol motor oil - shop all options now at NAPA Auto Parts, buy online and pick up in store!

Castrol From enhancing products to boost efficiency in electric and hybrid vehicles, to supporting technologies like wind turbines, production line robots and immersion cooling for data centers, Castrol is driving innovation across mobility, industry and beyond.

Castrol engine oil brands Learn more about our motorbike products Sign up for the Castrol Engine Warranty program

Castrol® EDGE® Euro 0W-40 A3/B4 is an advanced full synthetic motor oil engineered to exceed manufacturer test limits ensuring the highest level of protection and maximum performance for European cars.