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5 Star Synthetics LLC is a trusted AMSOIL dealer specializing in full synthetic oil, diesel engine oil, and fleet maintenance oils for vehicles, powersports, and heavy equipment. Based in Rosharon, Texas, we serve commercial and retail customers with high-performance synthetic lubricant, gear lube, and transmission fluid solutions. Whether you're managing a fleet or maintaining your own ride, we offer wholesale pricing, expert guidance, and dealership opportunities. As a family-owned business with AMSOIL T1-T4 certifications, our team delivers quality products, reliable service, and fast fulfillment. Contact us today for synthetic gear oils, hydraulic oil, or oil change products tailored to your needs-locally or nationwide.