Heavys supplies Allison-approved transmission fluids that are specifically formulated to protect Allison automatic transmissions in demanding Australian operating conditions. Our range includes premium Allison-approved fluids such as TES 668 and TES 295 specification products, including Valvoline solutions selected to support the performance, durability and service life of Allison-equipped trucks, buses, emergency vehicles, mining equipment, construction machinery and other vocational applications.

Using the correct Allison-approved fluid is critical because these products are tested against Allison’s own transmission engineering standards for fluid stability, lubrication, cold operation, friction performance and long-term durability. Allison recommends TES 668 approved fluids to enhance transmission performance and durability across operating environments, while TES 295 approved fluids remain approved for many Allison on-highway products.