07/15/2026
Local Amsoil dealer retiring but do not worry.
We want to wish a massive, heartfelt congratulations to William Barth, who is officially retiring after years of dedicated service as a local Independent Amsoil Dealer right here in Longmont. William has taken incredible care of this community, and we want to thank him for his years of hard work and dedication. Happy retirement, William!
To ensure his customers are taken care of and to help him step into this next chapter, I have officially acquired his Amsoil dealership and taken over his entire inventory.
What does this mean for you?
If you were one of William’s loyal customers, don't worry—you are in great hands! I am proud to step in as your new local Independent Amsoil Dealer.
Massive Local Stock: To make things even more convenient, I maintain almost the full Amsoil catalog of products locally in stock. For quick and easy local pickups, I utilize the warehouse space at my shop, Big Thompson Diesel And Automotive. You can drop by to grab what you need without waiting for shipping.
World-Class Technical Support: Beyond providing the fluids, I am the owner of Big Thompson Diesel And Automotive and an ASE Certified World Class Technician. I am always available to help you make the right oil and lubrication decisions—whether you are a do-it-yourselfer working in your driveway or a professional shop looking out for your fleet. My goal is simply to help you and your customers succeed.
I’d love for you to read the story of how my own journey with Amsoil began. You can check out the full story on the website here: https://btdaa.com/entries/amsoil/our-relationship-with-amsoil
Drop by, say hello, and let’s keep your vehicles and equipment running at their absolute best.
📍 Product Pickup Location: Big Thompson Diesel And Automotive
📞 Call/ text [9702350977]
🌐 https://www.amsoil.com/?zo=1714853
