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Up to 25% Off Online Orders of Select Parts & Accessories. Enter Promo Code MMJ25 in Cart.

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Receive Up To 25% Off Your Online Purchase Of Select Parts and Accessories Instantly

When items are added to the cart, the discount will automatically deduct off the price of the qualifying items. Offers not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, installation, commercial or fleet purchases. Those products that are included in these offers will be displayed in product search results and product detail pages. Excludes select products, items already on sale and MAP priced brands & items. For full category inclusions and disclaimers, See Details Here. Valid online until 11:59 PM EST on 7/31/18.

Additional Promotions Not Included in the above:

Receive 20% Off Select Wagner branded brake parts with your online purchase.

Receive 10% Off Select Champion branded products with your online purchase. Use promotional code: CHAMP10.

Receive 10% Off Select FelPro branded products with your online purchase. Use promotional code: FELPRO10.


With a reputation for innovation and high performance engine oils, Castrol is an internationally recognized brand name. Operating in 130 countries and employing more than 12,000 people, we develop and manufacture 5,000 premium quality lubricants for the consumer, commercial, marine and industrial markets.

Castrol can offer the right product for nearly every kind of application. Our extensive range of high-quality oils is a result of 100 years experience in developing lubricants which are constantly undergoing extreme tests in motorsports and speed records.

Castrol GTX Conventional
Castrol GTX Conventional
  • Superior deposit protection
  • Castrol GTX exceeds demanding U.S. high shear and stay-in-grade requirements for viscosity breakdown protection and exceeds the demanding U.S. requirements for viscosity breakdown in every grade
  • Engineered to provide maximum protection against viscosity and thermal breakdown
  • Anti-oxidants, detergents and dispersants provide unsurpassed protection against thermal breakdown
  • Exceeds passenger car and gasoline light truck requirements for the protection of gasoline and turbocharged engines
Castrol Gtx High Mileage
Castrol GTX High Mileage
Switch To Castrol GTX High Mileage because…

Conventional oils may not do enough to protect high mileage vehicles. As the miles add up, Castrol GTX High Mileage helps extend engine life by addressing the key problems that may impact your high mileage vehicle.

Castrol GTX High Mileage Helps Extend Engine Life

As an engine gets older gaskets become brittle, seals deteriorate and oil burns faster. Castrol GTX High Mileage helps extend engine life. It provides superior oil burn off protection versus leading conventional oils and fights the main causes of engine failure: deposits and wear.

GTX High Mileage provides complete protection:
  • Superior oil burn-off protection versus leading conventional oils
  • Superior detergency that fights deposit build up
  • Seal conditioners to help reduce leaks
  • Advanced additives that minimize engine wear
Castrol Syntec
Castrol Edge with SYNTEC Technology

For years, you’ve depended on the power of Castrol SYNTEC to outperform conventional motor oils. Now, we’ve reformulated SYNTEC to outperform even itself:

  • In extreme tests, Castrol EDGE with SYNTEC Power Technology maintained maximum horsepower 30% longer than Castrol SYNTEC
  • New, powerful dispersant molecule suspends particles to fight power-robbing deposits
  • Improved formula continues to keep the engine running at peak power longer
  • Castrol EDGE with SYNTEC Power Technology performs better than conventional oil in the toughest industry tests
  • Superior protection against deposits. Corrosive particles such as acid, soot and oxidized fuel fragments can cause costly damage to critical engine parts
  • Powerful Additive Package that neutralizes corrosive particles, preventing them from grouping together and forming deposits
  • Neutralizes acids in your engine that can cause rust and corrosion on vital engine parts such as cylinders, bearings and hydraulic valve lifters
  • Provides Stability & Endurance under extreme conditions (heat, load, speed) that can cause conventional oils to break down
  • Delivers the ultimate performance under high-temperature conditions: unsurpassed protection against volatility burn-off and viscosity increase
  • Fully compatible with all conventional and synthetic oils. Can be used with confidence in every gasoline engine passenger car, new or old, regardless of oil previously used
Castrol Edge
Castrol EDGE (with Titanium Fluid Strength Technology)

For over 100 years, Castrol has been the technology leader in motor oil. In 2009, Castrol once again raised the bar for motor oil by launching a new, advanced synthetic called Castrol EDGE. Now, we proudly introduce our most advanced motor oil ever: Castrol EDGE with Titanium Fluid Strength Technology.

Why is Edge Castrol’s most advanced motor oil?
  • In extreme tests, Castrol EDGE with Titanium Fluid Strength Technology maintained maximum horsepower 60% longer than Castrol SYNTEC
  • Power = strongest dispersants to remove power-robbing deposits
  • Performance = strongest oxidation control to provide longest wear protection
  • Protection = Lowest volatility for maximum | performance during the entire drain interval
  • An advanced proprietary formula that provides performance and protection in extreme conditions such as towing, hauling, high and low temperatures, rapid acceleration and stop-and-go traffic
  • Performance and protection that outperforms conventional, high mileage and synthetic blend motor oils
  • Fully compatible with all conventional and synthetic oils
Castrol Tection Extra
Castrol Tection Extra


Modern engines run under harsher conditions than ever before, that's why Castrol Tection Extra is engineered to deliver 12 benefits in 1 formulation. Whether running an on road fleet or off road equipment, Tection Extra's Maximum Protection 12 formulation is a multi-benefit solution that provides 12 ways to protect your engine from the stress and strain of a harsh operating environment. It exceeds the demands of OEM specifications for Caterpillar, Cummins, Detroit Diesel, Mack and Volvo, as well as the toughest industry standards for wear protection and soot management.

Take Advantage of 12 Benefits in 1 Solution:

  • Reduced Piston Deposits— Keeps engine performance at peak level and reduces oil consumption
  • Decreased Corrosion— Protects engine surfaces from harmful corrosion and helps extend engine life
  • Improved Soot Management and Low Ash Technology— Reduces soot related oil thickening and helps reduce engine wear
  • Reduced Valve Train Wear— Protects the life and power of an engine
  • Increased Ring Wear Protection— Reduces oil consumption and protects an engine's performance and compression
  • Decreased Oil Consumption— Diminishes the need for top up and reduces emissions
  • Superior Shear Stability— Protects against excessive viscosity loss
  • Improved Deposit Protection— Fights deposit formation to maintain a clean engine
  • Enhanced Protection from Filter Plugging— Reduces the chance of long–term particulate engine damage
  • Outstanding Cold Pumpability— Protects engines during start–up in cold weather
  • Advanced Oxidation Control— Counters deposit build up and increases oil life
  • Increased Aeration Protection— Ensures optimum engine performance