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About Us

Motor Oil Supply is a wholesale distributor of lubricants, coolants, equipment, parts, and automotive shop supplies.


Founded in 1979 by John Ruth, Motor Oil Supply started with one employee and a small warehouse and has grown into one of the largest automotive lubricant distributors in the Pacific Northwest.

Offering genuine service and support, the widest array of brands and equipment, and competitive pricing, we have become the premium multi-brand distributor for the automotive industry and expanding into the maritime and aviation industries. 


Our headquarters are located in Kent, WA with a second distribution facility in Bellingham that provide over 35,000 square feet of storage stocking case goods, drums, bulk oil, equipment, parts, and much more. Specializing in lubricants, we service all types of customers, from large dealerships to one-person repair shops, and everything in between. We pride ourselves on treating each customer, regardless of size or business type, with the utmost care and highest level of service. 


When you choose Motor Oil Supply, you are choosing a business partner that is committed to helping you succeed.

Company History

1979

Founded

Motor Oil Supply was created in the garage of John Ruth.

1994

Start of Customer Appreciation Trips

The first year of the MOS's annual Phenix Golf trip held by the Sales Team to show our customers our appreciation.

1996

Kent Warehouse

Expanded into a larger warehouse and office space, where we are still operating from today.

2004

Bulk Oil Silos Installed

Added bulk oil silos to the Kent warehouse for greater customer value of oil pricing.

2025

Modernized System

Updated to a cloud based business management system that offers customers a secure portal.

Drawing of MOS Kent building

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