It's surprisingly easy to stick to motor oil options that are manufactured in the United States. Plenty of reputable brands ...

Castrol's focus — at least in its marketing — is on making a motor oil that's designed primarily to fight the buildup of sludge in an engine. To that end, its GTX Full Synthetic is reportedly ...

A good motor oil can make the difference between a long-lasting engine and a sputtery ride. Here's what you should look for ...

Before answering the best oil for my car question, it's worth understanding why exactly engine oil is considered the ...

6 Ford design underscoring Castrol's superiority in motor oil performance and protection ... (EDGE), and "Superior Protection" (GTX Full Synthetic) across seven critical areas, including pressure ...

If you’ve got a more modern car, feed it synthetic motor oil for its entire life to avoid issues with its more complex engine down the line. You can choose between Castrol EDGE and GTX Full ...

6 Ford design underscoring Castrol’s superiority in motor oil performance and protection ... (EDGE), and “Superior Protection” (GTX Full Synthetic) across seven critical areas, including ...

Many people recognize Castrol for its GTX conventional motor oil, but the company offers a wide variety of products. Its lineup includes full synthetic and synthetic blend oils, as well as special ...

We earn commissions from purchases you make using links in our articles. Learn more. Save time and money by changing your own oil. See the best conventional motor oils here. Shopping for engine ...

Selecting the right engine oil can be tricky, especially with varying manufacturer requirements. Test your knowledge with four vehicles from Asia, Europe, and the U.S., each with unique oil ...

Castrol SRF synthetic racing brake fluid is another high ... but changing your brake fluid isn’t as simple as changing your oil. Your brake fluid needs to be drawn from the system with a vacuum ...