Made in America

“Superior quality and customer service since 1940”



Engine Oil (Diesel & Gas)

Gear Oil

Hydraulic Oil

Industrial Fluids

Food-grade lubricant

Bar & Chain Oil​

Cutting Fluid

Compressor Oil

Transmission Fluids


Metal Working Fluid

Heat Transfer Oil

Specialty Products

In addition to our comprehensive line of lubricants, Dennis Oil offers our customers a wide range of specialty products including DEF, methanol, shop products and we are also one of the few Lubriplate dealers in the region.


Anti-Freeze, Solvents, Methanol, Brake Cleaner, Carb Cleaner, Form Oil

 Windshield Washer Fluid

Diesel Treatment/No Gel

Absorbents & Floor Dri

Penetrating Oil, Asphalt Release

Racing Oil

Markets Served


Heavy Construction

Mining Equipment

Industrial Manufacturing

Food Manufacturing

Quick Lube


Oil & Gas Production



Our Engine oils and Diesel exhaust fluid are API Certified and guaranteed to meet OEM specifications. 

DOC Kleen-Tech 10W-30 Diesel Engine Oil  is Cummins approved.


Dennis Oil Company (D.O.C.) a family-owned business since 1940 is one of the largest manufacturers/suppliers of lubricants in the region, we offer a full and comprehensive line of products to the Manufacturing, trucking, mining, automotive, railroad and agricultural industries. Since our founding in 1940, our business has expanded to cover Missouri, central and western Arkansas, Eastern Oklahoma and South East Kansas.  At Dennis Oil Company we pride ourselves with having superior quality products and superior customer service. High-Quality affordable lubricants are only part of what you get when you choose Dennis Oil Company. We also deliver 80 years' worth of knowledge and experience.  We train our professional representatives, service personnel, and delivery drivers to provide you virtually seamless lubrication products and services, so you can meet the toughest deadlines under the most challenging conditions. 


Joplin Warehouse

136 N. Prigmore Avenue

Joplin, MO 64804


417-781-2645 fax

Choose your pizza toppings:

Jeff City Warehouse

5508 Business 50 West

Unit B

Jefferson City, MO 65109


573-893-8531 fax




Corporate Office

545 N. National

Springfield, MO 65802



417-862-1502 fax

Joplin Warehouse

136 N. Prigmor Avenue

Joplin, MO 64804


417-781-2645 fax

Jeff City Warehouse

5508 Business 50 West, Unit B

Jefferson City, MO 65109


573-893-8531 fax

West Plains Warehouse

1625 Earls Drive

West Plains, MO 65775


417-257-0138 fax


© 2023 by D.O.C. Lubrication