Motor Oil for Automotive, Diesel & Commercial Applications

Find motor oil for cars, trucks, diesel engines, repair shops, quick-lube operations, fleets, and commercial equipment at Keller-Heartt. Shop trusted brands including Truegard, Shell Rotella, Pennzoil, and FormulaShell in a range of viscosities, formulations, and package sizes.

Whether you need motor oil for routine vehicle maintenance or 55-gallon drums for a busy shop or fleet, Keller-Heartt makes it easier to find the right oil for your application.

Find the Right Motor Oil for Your Engine

Choosing motor oil starts with your vehicle or equipment manufacturer's recommended viscosity and oil specification. Different engines are designed for different oil weights, operating conditions, and performance standards.

Keller-Heartt carries conventional, synthetic blend, and full synthetic motor oils across popular viscosity grades for automotive, diesel, fleet, and commercial applications.

5W-30 Motor Oil

5W-30 is a widely used viscosity for passenger cars, light trucks, and other gasoline-powered vehicles. Keller-Heartt offers several 5W-30 options, including Truegard synthetic blend, full synthetic, and Dexos-approved products.

Shop 5W-30 Motor Oil

10W-30 Motor Oil

10W-30 is used across a range of automotive and equipment applications. Keller-Heartt carries 10W-30 options from Truegard, Shell Rotella, and FormulaShell, including synthetic blend, full synthetic, and heavy-duty formulations.

Shop 10W-30 Motor Oil

15W-40 Heavy-Duty Motor Oil

15W-40 is commonly associated with heavy-duty diesel engines and commercial equipment. Keller-Heartt carries options including Truegard 15W-40 and Shell Rotella T4 Triple Protection 15W-40 for demanding applications.

Shop 15W-40 Motor Oil

5W-40 Motor Oil

Keller-Heartt's 5W-40 selection includes heavy-duty and synthetic motor oils, including Shell Rotella T6 and Truegard options designed for demanding engine applications.

Shop 5W-40 Motor Oil

Buy Motor Oil in Bulk

55-Gallon Motor Oil Drums for Shops & Fleets

For repair shops, quick-lube businesses, dealerships, fleets, farms, and other operations that perform frequent oil changes, buying motor oil in 55-gallon drums can simplify inventory and reduce reliance on individual bottles or cases.

Keller-Heartt carries a dedicated selection of 55-gallon motor oil drums across multiple viscosities and brands, including Truegard, Pennzoil, FormulaShell, and Shell Rotella.

Shop 55-Gallon Motor Oil

5-Gallon Motor Oil Pails

For shops and businesses that need more oil than individual bottles but don't require a full drum, 5-gallon pails offer a convenient middle ground. Keller-Heartt carries products such as Truegard 5W-20 in 5-gallon pails for smaller-volume professional applications. 

Conventional vs. Synthetic Blend vs. Full Synthetic Motor Oil

Understanding the difference between motor oil formulations can make it easier to narrow down the right product.

Conventional motor oil uses traditional mineral base oils and may be appropriate for vehicles and equipment designed for conventional lubricants.

Synthetic blend motor oil combines conventional and synthetic base oils to provide additional performance characteristics while offering a middle ground between conventional and full synthetic oils.

Full synthetic motor oil uses highly refined or engineered base oils and is formulated for enhanced performance across demanding operating conditions.

The correct choice should always be based on the specifications and viscosity recommended by the vehicle or equipment manufacturer.

Motor Oil for Shops, Fleets & Commercial Operations

Keller-Heartt's motor oil selection isn't limited to individual vehicle owners. Bulk quantities are particularly useful for:

• Automotive repair shops
• Quick-lube businesses
• Car and truck dealerships
• Commercial fleets
• Trucking operations
• Farms and agricultural operations
• Construction companies
• Municipal and government fleets
• Heavy equipment operators

Keller-Heartt also has a dedicated quick-lube collection containing motor oil, vehicle fluids, equipment, and other shop supplies, making this a particularly relevant audience for the collection.