AMSOIL Signature Series Synthetic Automatic Transmission Fluid has been proven in the field to deliver reserve protection against heat and wear. The demands on today’s automatic transmissions have multiplied. Excessive idling, extreme temperatures and hauling heavy loads all pose threats to a transmission’s longevity. Work vehicles are consistently used in these severe-service conditions but operators are often unaware of the toll it’s taking on their transmissions. Automatic transmissions have evolved into an intricate mix of gears, clutch packs and narrow oil passageways that require a steady supply of lubrication. They have become smaller yet must withstand higher horsepower and torque. Transmission fluid must act as a lubricant protecting against intense heat and shearing, and also as a hydraulic fluid to enable shifting. Neglecting this vital fluid leads to extreme heat stress, erratic shifts and catastrophic wear. Ultimately, a time-consu...