Because when a company invents the category, spends 50+ years perfecting it, and proves it in independent testing — you can recommend it with total confidence.
TiOLi Performance Lubricants LLC, owned and operated by Richard Proebstel and Mark Larson, is a Washington-registered independent AMSOIL dealership serving customers who care about what goes into their engines. We're not a faceless warehouse — when you buy through us, you get a real person who will help you find the right products for your specific vehicles and equipment, answer your questions, and stand behind every recommendation.
We chose to represent AMSOIL for a simple reason: it works. AMSOIL introduced the world's first synthetic motor oil to meet American Petroleum Institute service requirements back in 1972, earning it the title The First in Synthetics®. Five decades later, AMSOIL products are still formulated in-house, tested against the industry's toughest standards, and trusted by racers, fleets, and everyday drivers alike.
Whether you drive a commuter car, tow with a diesel pickup, ride a motorcycle, or maintain a fleet of equipment, we can match you with a complete AMSOIL protection package — and show you how extended drain intervals can actually save you money over conventional oil changes.
Ready to make the switch? Shop our online storefront any time, or contact us for a personal recommendation.
Conventional oils are refined from crude and carry along impurities. Synthetics are built molecule-by-molecule for the job.
Superior resistance to sludge and deposits keeps oil passages clear and engines running like new.
Synthetics flow quickly at extreme low temperatures, protecting your engine in the critical first seconds.
High-temperature stability resists breakdown during towing, hauling, and hot summer traffic.
Extended drain intervals mean fewer changes, less used oil to dispose of, and lower total cost.
