Motor Oils
- Castrol®Edge™ SAE 5W-40 Full Synthetic Motor Oil, 1 Quart (15D932)Edge™ SAE 5W-40 Full Synthetic Motor Oil, 1 Quart (15D932) by Castrol®. Castrol EDGE with Fluid TITANIUM Technology, is Castrol’s strongest oil and the natural choice for drivers who want the best combination of sludge protection,...$11.43
- Castrol®Edge™ SAE 5W-40 Full Synthetic Motor Oil, 5 Quarts (15D934)Edge™ SAE 5W-40 Full Synthetic Motor Oil, 5 Quarts (15D934) by Castrol®. Castrol EDGE with Fluid TITANIUM Technology, is Castrol’s strongest oil and the natural choice for drivers who want the best combination of sludge protection,...$48.55
- Castrol®GTX High Mileage™ SAE 10W-30 Synthetic Blend Motor Oil, 1 Quart (149D6C)GTX High Mileage™ SAE 10W-30 Synthetic Blend Motor Oil, 1 Quart (149D6C) by Castrol®. Castrol EDGE with Fluid TITANIUM Technology, is Castrol’s strongest oil and the natural choice for drivers who want the best combination of sludge...10X better high temperature performance6X better wear protection$9.03
- Castrol®GTX High Mileage™ SAE 10W-40 Synthetic Blend Motor Oil, 1 Quart (149D7B)GTX High Mileage™ SAE 10W-40 Synthetic Blend Motor Oil, 1 Quart by Castrol®. Castrol EDGE with Fluid TITANIUM Technology, is Castrol’s strongest oil and the natural choice for drivers who want the best combination of sludge...$9.03
- Castrol®GTX High Mileage™ SAE 5W-30 Synthetic Blend Motor Oil, 1 Quart (149D6A)GTX High Mileage™ SAE 5W-30 Synthetic Blend Motor Oil, 1 Quart (149D6A) by Castrol®. Castrol GTX™ High Mileage motor oil is the leading consumer high miles brand. You won't need to worry about using a high mileage oil or synthetic...Phosphorus Replacement Technology to help extend the life of the emission systemSuperior dispersancy that fights sludge build up$9.03
- Castrol®GTX Ultraclean™ SAE 5W-20 Synthetic Blend Motor Oil, 1 Quart (15B743)GTX Ultraclean™ SAE 5W-20 Synthetic Blend Motor Oil, 1 Quart (15B743) by Castrol®. Sludge can block your engine's vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life. Castrol GTX is...Superior protection against engine sludgeAdvanced protection against viscosity and thermal breakdown$7.99
- Castrol®GTX Ultraclean™ SAE 5W-30 Synthetic Blend Motor Oil, 1 Quart (15A66C)GTX Ultraclean™ SAE 5W-30 Synthetic Blend Motor Oil, 1 Quart (15A66C) by Castrol®. Castrol EDGE with Fluid TITANIUM Technology, is Castrol’s strongest oil and the natural choice for drivers who want the best combination of sludge...10X better high temperature performance6X better wear protection$7.99
- Castrol®GTX™ SAE 10W-30 Conventional Motor Oil, 1 Quart (15B400)GTX™ SAE 10W-30 Conventional Motor Oil, 1 Quart (15B400) by Castrol®. Sludge can block your engine's vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life. Castrol GTX is a premium...Superior protection against engine sludgeAdvanced protection against viscosity and thermal breakdown$7.99
- Castrol®GTX™ SAE 10W-40 Conventional Motor Oil, 1 Quart (14CD5A)GTX™ SAE 10W-40 Conventional Motor Oil, 1 Quart (14CD5A) by Castrol®. Sludge can block your engine's vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life. Castrol GTX is a premium...$7.99
- Shell®FormulaShell™ SAE 10W-40 Conventional Motor Oil, 1 Quart (550049475)FormulaShell™ SAE 10W-40 Conventional Motor Oil, 1 Quart by Shell®. FormulaShell® conventional motor oil is formulated for improved fuel economy and to provide engine protection and performance required by modern engines....$4.65
- Shell®High Mileage Vehicle™ SAE 5W-20 Full Synthetic Motor Oil, 1 Quart (550022818)High Mileage Vehicle™ SAE 5W-20 Full Synthetic Motor Oil, 1 Quart (550022818) by Shell®. Pennzoil® motor oil is formulated with Active Cleansing Technology. At Pennzoil we’re committed to engineering motor oils that are proven to...$6.87
- Shell®High Mileage Vehicle™ SAE 5W-30 Full Synthetic Motor Oil, 1 Quart (550022838)High Mileage Vehicle™ SAE 5W-30 Full Synthetic Motor Oil, 1 Quart (550022838) by Shell®. From the maker of the leading motor oil in America, anadvanced proprietary conventional formula with Active Cleansing Agents. Not only helps...$6.77
- Shell®Pennzoil Platinum™ SAE 10W-30 Full Synthetic Motor Oil, 1 Quart (550022687)Pennzoil Platinum™ SAE 10W-30 Full Synthetic Motor Oil, 1 Quart (550022687) by Shell®. Pennzoil® motor oil is formulated with Active Cleansing Technology. At Pennzoil we’re committed to engineering motor oils that are proven to...$8.26
- Shell®Pennzoil Platinum™ SAE 5W-30 Full Synthetic Motor Oil, 1 Quart (550022689)Pennzoil Platinum™ SAE 5W-30 Full Synthetic Motor Oil, 1 Quart (550022689) by Shell®. Pennzoil® motor oil is formulated with Active Cleansing Technology. At Pennzoil we’re committed to engineering motor oils that are proven to...$9.53
- Shell®Pennzoil™ High Mileage™ SAE 10W-40 Conventional Motor Oil, 1 Quart (550022810)Pennzoil™ High Mileage™ SAE 10W-40 Conventional Motor Oil, 1 Quart by Shell®. From the maker of the leading motor oil in America, anadvanced proprietary conventional formula with Active Cleansing Agents. Not only helps prevent dirt...$6.81
- Shell®Pennzoil™ SAE 30 Conventional Motor Oil, 1 Quart (550034991)Pennzoil™ SAE 30 Conventional Motor Oil, 1 Quart by Shell®. Pennzoil® motor oil is formulated with Active Cleansing Technology. At Pennzoil we’re committed to engineering motor oils that are proven to protect your engine. That’s...$6.45
- Shell®Pennzoil™ SAE 5W-30 Synthetic Blend Motor Oil, 1 Quart (550035091)Pennzoil™ SAE 5W-30 Synthetic Blend Motor Oil, 1 Quart (550035091) by Shell®. Pennzoil® motor oil is formulated with Active Cleansing Technology. At Pennzoil we’re committed to engineering motor oils that are proven to protect your...$6.19
- Shell®Rotella™ T1 SAE 30 Conventional CF/CF-2 Heavy Duty Diesel Motor Oil, 1 Gallon (550054449)Rotella™ T1 SAE 30 Conventional CF/CF-2 Heavy Duty Diesel Motor Oil, 1 Gallon (550054449) by Shell®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art...$24.86
- Shell®Rotella™ T1 SAE 30 Conventional CF/CF-2 Heavy Duty Diesel Motor Oil, 5 Gallons (550054448)Rotella™ T1 SAE 30 Conventional CF/CF-2 Heavy Duty Diesel Motor Oil, 5 Gallons x 1 Pail (550054448) by Shell®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using...$135.92
- Shell®Rotella™ T1 SAE 30 Conventional CF/CF-2 Heavy Duty Diesel Motor Oil, 55 Gallons (550054447)Rotella™ T1 SAE 30 Conventional CF/CF-2 Heavy Duty Diesel Motor Oil, 55 Gallons (550054447) by Shell®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art...$1,382.04
- Shell®Rotella™ T1 SAE 40 Conventional CF/CF-2 Heavy Duty Diesel Motor Oil, 1 Gallon (550054466)Rotella™ T1 SAE 40 Conventional CF/CF-2 Heavy Duty Diesel Motor Oil, 1 Gallon (550054466) by Shell®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art...$27.29
- Shell®Rotella™ T1 SAE 40 Conventional CF/CF-2 Heavy Duty Diesel Motor Oil, 5 Gallons (550054465)Rotella™ T1 SAE 40 Conventional CF/CF-2 Heavy Duty Diesel Motor Oil, 5 Gallons x 1 Pail (550054465) by Shell®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using...$128.64
- Shell®Rotella™ T4 Triple Protection CJ-4 Diesel SAE 15W-40 Conventional Motor Oil, 1 Gallon (550045126)Rotella™ T4 Triple Protection CJ-4 Diesel SAE 15W-40 Conventional Motor Oil, 1 Gallon (550045126) by Shell®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using...$24.74
- Shell®Rotella™ T4 Triple Protection CJ-4 Diesel SAE 15W-40 Conventional Motor Oil, 1 Quart (550045141)Rotella™ T4 Triple Protection CJ-4 Diesel SAE 15W-40 Conventional Motor Oil, 1 Quart (550045141) by Shell®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using...$6.99
- Shell®Rotella™ T4 Triple Protection CJ-4 Diesel SAE 15W-40 Conventional Motor Oil, 1 Quart x 6 Bottles (550049483)Rotella™ T4 Triple Protection CJ-4 Diesel SAE 15W-40 Conventional Motor Oil, 1 Quart x 6 Bottles (550049483) by Shell®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using...$6.53
- Shell®Rotella™ T4 Triple Protection CJ-4 Diesel SAE 15W-40 Conventional Motor Oil, 2.5 Gallons (550045127)Rotella™ T4 Triple Protection CJ-4 Diesel SAE 15W-40 Conventional Motor Oil, 2.5 Gallons (550045127) by Shell®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using...$66.76
- Shell®Rotella™ T5 Heavy Duty Diesel SAE 10W-30 Synthetic Blend Motor Oil, 1 Gallon (550045130)Rotella™ T5 Heavy Duty Diesel SAE 10W-30 Synthetic Blend Motor Oil, 1 Gallon (550045130) by Shell®. Shell Rotella™ T5 10W-30 diesel engine oil with Triple Protection Plus™ technology uses synthetic base oils plus advanced additive...$25.18
- Shell®Rotella™ T6 SAE 5W-40 Full Synthetic Diesel Motor Oil, 1 Gallon (550045347)Rotella™ T6 SAE 5W-40 Full Synthetic Diesel Motor Oil, 1 Gallon by Shell®. Shell Rotella T6 Full Synthetic Diesel Oil provides excellent protection against harmful engine wear and sludge. Count on Shell Rotella T6 Full Synthetic,...$33.19
- Shell®SAE 10W-40 Synthetic Blend Motor Oil, 1 Quart (550035160)SAE 10W-40 Synthetic Blend Motor Oil, 1 Quart (550035160) by Shell®. This Motor Oil is formulated for improved fuel economy and to provide engine protection and performance required by modern engines. This Motor Oil is...$6.69
- Genuine®502 00 SAE 5W-30 Full Synthetic Motor Oil, 1 Quart (GE555401QDSP)502 00 SAE 5W-30 Full Synthetic Motor Oil, 1 Quart (GE555401QDSP) by Genuine®. Designed utilizing the latest technology, this product features premium quality and will perform better than advertised. Perfect for your vehicle and...$12.30
Oil lubricates and cools engine parts and keeps your engine clean. The oil is drawn through a pickup tube and screen from the oil pan and circulated throughout the engine under pressure by the oil pump. The oil is filtered and then sent to the engine bearings and valvetrain. Splash from the connecting rods, and on some engines jets of oil, lubricate the cylinder walls and cool the underside of the pistons. Oil then returns through passages to the oil pan.
There are two kinds of engine oil, conventional petroleum oil and synthetic. Conventional oil is refined from crude oil pumped out of the ground, while synthetic oil is chemically constructed in the laboratory from various raw materials. Synthetic oil is superior to conventional oil at temperature extremes because it flows better at cold temperatures for better startup protection and resists high temperatures that can cause ordinary oil to breakdown.
All oils have additive packages. Detergents keep varnish and sludge from forming while dispersants keep harmful materials suspended so they can be drained out. Extreme pressure additives and friction modifiers reduce wear for longer engine life and reduce friction for better performance and mileage. Viscosity improvers minimize viscosity change with temperature. Other additives reduce foaming and oxidation, neutralize acids and combustion byproducts, and prevent rust and corrosion. The additive package in synthetic oil is generally superior to that of conventional oil.
Oils are classified by grade and standard. The grade is a numerical index established by the Society of Automotive Engineers (SAE) that represents the oil’s viscosity, or resistance to flow, commonly referred to as “weight”. In this system a 10 weight oil flows easier than a 50 weight oil at the same temperature. Most vehicle manufacturers recommend a multi-grade oil like 10W-30 (the w stands for winter, not weight) because it will flow easily like a 10 weight oil under cold temperatures, but have the characteristics of a 30 weight oil at 212°F. It is best to use the grade of oil recommended by the vehicle manufacturer.
The American Petroleum Institute (API) evaluates lubricants against minimum performance standards, with service classes for gasoline and diesel engines. The gasoline engine standard begins with “S”, while the diesel engine standard begins with “C”. The current gas engine standard is SN, with CJ-4, CI-4, and CI-4 PLUS current for diesel engines. The standard and grade can be found in the API service symbol, or “Donut”, on the oil container. Some oils may also have the API “Starburst” symbol, indicating the oil meets fuel economy standards set by the International Lubricant Specification Advisory Committee (ILSAC).
Featured Brands
Related Categories
- Transmission Fluids, Oils & Additives
- Engine Oil Additives
- Differential Lubricants
- Transfer Case Lubricants
- Antifreeze & Additives
- CV Joint Lubricants
- Air Filter Maintenance
- Power Steering Fluid
- Anti-Seize Lubricants
- Bearing Lubricants
- Multi-Purpose Lubricants
- A/C Chemicals
- Adhesives & Sealants
- Suspension Lubricants
- Cleaners & Degreasers
- Gasketing
- Hand Care
- Brake Fluids & Lubricants
- Fuel System Additives
- Lubricants
- Electrical Lubricants
- Thread Compounds