The Best Castrol Motor Oil 2026

1. Castrol Edge Titanium 5w-30, 1x5qt

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Castrol Edge Titanium 5w-30, 1x5qt

2. Castrol GTX 5W-30 Synthetic Blend Motor Oil, 1 Quart

Castrol® GTX® 5W-30 is a synthetic blend motor oil with a double-action formula proven to clean away the sludge that can block engine oilways* and help prevent new sludge formation. Sludge is a thick, tar like substance caused by severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals. Sludge can block your engine's vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life. * When tested in engines with a high level of sludge

Premium-quality base oils and anti-wear additives that help extend engine life Superior protection against engine sludge Advanced protection against viscosity and thermal breakdown Superior protection against high-temperature deposits Meets or exceeds the following specifications: API SP/SN PLUS/SN/SM ILSAC GF-6 Meets Ford WSS-M2C946-B1 Meets Ford WSS-M2C961-A1

3. Castrol GTX 10W-30 Conventional Motor Oil, 1 Quart

Castrol® GTX® 10W-30 is a premium conventional motor oil that has been helping to extend engine life for over 50 years. It is specially engineered to prevent harmful build-up of sludge while protecting against new oil splatter formation better than tough industry standards. Sludge is a thick, tar like substance caused by severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals. Sludge can block your engine's vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life.

Advanced protection against viscosity and thermal breakdown Superior protection against engine sludge Premium quality base oils and anti-wear additives to help extend the life of your engine Helps minimize oil consumption Meets or exceeds the following specifications: API SP/SN PLUS/SN/SM ILSAC GF-6

4. Castrol GTX 10W-40 Conventional Motor Oil, 5 Quarts

Castrol® GTX® 10W-40 is a premium conventional motor oil that has been helping to extend engine life for over 50 years. It is specially engineered to prevent harmful build-up of sludge while protecting against new oil splatter formation better than tough industry standards. Sludge is a thick, tar like substance caused by severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals. Sludge can block your engine's vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life.

Advanced protection against viscosity and thermal breakdown Superior protection against engine sludge Premium quality base oils and anti-wear additives to help extend the life of your engine Helps minimize oil consumption *When tested in engines with a high level of sludge Meets or exceeds the following specifications: API SP/SN PLUS/SN/SM ILSAC GF-6

5. Castrol GTX 5W-20 Synthetic Blend Motor Oil, 1 Quart

Castrol GTX 5W-20 is a synthetic blend engine oil with a double-action formula proven to clean away the sludge that can block engine oilways* and help prevent new sludge formation. Sludge is caused by environmental factors such as poor fuel quality, hot weather and stop-start driving conditions and reduces engine life, power and fuel economy. If keeping your engine clean is important to you, Castrol GTX synthetic blend is the oil for you.

Superior protection against engine sludge Advanced protection against viscosity and thermal breakdown Superior protection against high-temperature deposits Premium-quality base oils and anti-wear additives that help extend the life of your engine * When tested in engines with a high level of sludge Meets or exceeds API SP/SN PLUS/SN Meets or exceeds ILSAC GF-6 Meets Ford WSS-M2C946-B1

6. Castrol Transmax Import Multi-Vehicle Automatic Transmission Fluid, 1 Quart

Castrol® Transmax™ Import Multi-Vehicle is a synthetic technology product designed for use in most Honda, Toyota and Nissan vehicles as well as many other imported brands. It exceeds the requirements of the JASO-1A performance standard created by Japanese auto manufacturers. It also exceeds DEXRON®-IIIH, MERCON®V and MERCON® requirements.

Enhanced friction durability for smooth transmission performance Exceptional high temperature protection to effectively resist fluid oxidation Superb low temperature fluidity for cold weather shifting Recommended for use in vehicles that require: • Honda, Acura – ATF-Z1, DW-1 (except in CVTs) • Toyota, Lexus – Type T, T-III, T-IV • Nissan, Infiniti – Matic-D, Matic-J • BMW – LT71141 • Hyundai, Kia – Diamond SP-II, SP-III • Volvo (all specifications) Also meets requirements of • ATF+3,® ATF+2,® ATF+® • Ford MERCON® • General Motors - DEXRON®-III H and prior (Not for use where DEXRON®-VI is required) • JASO-1A

7. Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 1 Quart

Castrol® GTX® High Mileage 5W-30 is the #1 consumer high-mileage brand, specially formulated for vehicles with over 75,000 miles. It's a synthetic blend motor oil that helps extend engine life providing Superior Protection in 7 Critical Areas including corrosion prevention, sludge control, timing and friction wear. It also contains a proprietary additive to protect the emisssion system. Our Phosphorus Replacement Technology reduces harmful phosphorus to protect the catalytic converter and help extend the life of your high mileage vehicle.

Phosphorus Replacement Technology to help extend the life of the emission system Superior dispersancy that fights sludge build up Exceptional oil burn-off protection exceeding industry standards* Seal conditioners to help reduce leaks Advanced additives that minimize engine wear Improved fuel economy** * Based on API and ACEA volatility specifications ** In 5W-20, 5W-30 and 10W-30 grades versus industry specifications Meets or exceeds the following specifications: API SP/SN PLUS/SN/SM ILSAC GF-6 Meets Ford WSS-M2C946-B1 Meets Ford WSS-M2C961-A1

8. Castrol Transmax DEX/MERC Automatic Transmission Fluid

Improve the way your vehicle performs with the Castrol Transmax DEX MERC Automatic Transmission Fluid. This product is intended for use in all Ford models 1983 to 1996 and for General Motors 2005 and earlier vehicles. The Castrol automatic transmission fluid can help extend the life of a car's transmission and avoid having other parts break down along with it, saving you lots of money in the long run. The automotive fluid is engineered to help get premium performance out of older automobiles. It comes in a bottle that contains 1 qt of liquid. This formula will be handy for use in a professional auto shop, in someone's personal at-home garage or stored in the trunk of your car. The Castrol Transmax DEX MERC Automatic Transmission Fluid meets or exceeds Ford MERCON Requirements.

Castrol Transmax DEX/MERC Automatic Transmission Fluid Enhanced friction durability for smooth transmission performance Meets DEXRON-IIIH requirements Satisfies requirements of DEXRON, DEXRON-III, IIE, and II Meets MERCON requirements Suitable for power steering applications where MERCON is required Not for use in applications calling for DEXRON-VI Not for use in applications calling for MERCON V or MERCON SP Helps improve overall performance in various vehicles

9. Castrol GTX 20W-50 Conventional Motor Oil, 1 Quart

Castrol® GTX® 20W-50 is a premium conventional motor oil that has been helping to extend engine life for over 50 years. It is specially engineered to prevent harmful build-up of sludge while protecting against new oil splatter formation better than tough industry standards. Sludge is a thick, tar like substance caused by severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals. Sludge can block your engine's vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life.

Advanced protection against viscosity and thermal breakdown Superior protection against engine sludge Premium quality base oils and anti-wear additives to help extend the life of your engine Helps minimize oil consumption Meets or exceeds the following specifications: API SP/SN PLUS/SN/SM

10. Castrol Transmax High Mileage Automatic Transmission Fluid, 1 qt

Castrol® Transmax® High Mileage Automatic Transmission Fluid is a premium ATF specially formulated for maximum transmission life in high mileage vehicles. Castrol Transmax High Mileage ATF has been engineered to help alleviate typical problems experienced by transmissions with over 75,000 miles such as leaks and rough shifts. Newer vehicles will also benefit from this technologically advanced formulation.Industry Specifications and OEM Approvals:Meets or Exceeds General Motors DEXRON®-IIIH Requirements Meets or Exceeds Ford MERCON® Requirements. May also be used in power steering applications where MERCON® is required.Exceeds all passenger car and light truck manufacturer’s warranty requirements for vehicles, transmissions or power steering service where a DEXRON®-IIIH or MERCON® type ATF is specifiedRecommended for use:The most applications amongst high mileage transmission fluids and suitable for use in vehicles as indicated below:Acura— ATF-Z1 (except in CVTs) Chrysler— ATF®+3, ATF®+2, ATF®+ Ford— MERCON® General Motors— DEXRON®- III H, II-D, II, DEXRON®; 9986195; Type A, Suffix A (TASA) Honda— ATF-Z1, ATF DW-1 (except in CVTs) Hyundai— SP-II, SP-III Infiniti— Matic-D, Matic-J, Matic-K Lexus— Type T, T-III, T-IV Nissan— Matic-D, Matic-J, Matic-K Toyota— Type T, T-III, T-IV Volvo— All Specifications

Castrol Transmax High Mileage Automatic Transmission Fluid, 1 qt Additional seal conditioners to prevent or help stop leaks Extra cleaning agents to reduce varnish and sludge formulation Protects against clutch wear Restores smooth shifting Greater frictional durability provides superior transmission performance