“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.

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© 2023 by D.O.C. Lubrication