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AMSOIL Synthetic Automatic Transmission Fluid
Synthetic Low Viscosity Automatic Transmission Fluid (ATL)
Replaces Dexron VI, MERCON® LV, SP; Toyota WS; Honda DW-1; Nissan Matic S; Polaris Demand Drive
Automatic transmissions have become increasingly complex as vehicle manufacturers strive to improve efficiency while satisfying consumer demands. Smaller, smoother-shifting transmissions with longer fluid life capabilities and heavier load capacities are now standard. Traditional ATFs, however, are unable to meet these extreme requirements, and new fluids have emerged with each new advancement in transmission engineering. AMSOIL, with its original introduction of a synthetic ATF in 1980, remains the leader in transmission fluid quality. AMSOIL Synthetic Low-Viscosity Automatic Transmission Fluid is formulated with the highest-quality components to exceed the most stringent industry standards. The quality and performance of AMSOIL Synthetic ATF is guaranteed.
EXCEPTIONAL HOT- AND COLD-TEMPERATURE PERFORMANCE
Cold-Temperature Fluidity – Cold, thick automatic transmission fluid lengthens shift times and reduces energy efficiency (fuel economy). AMSOIL Synthetic Low-Viscosity ATF is wax-free and delivers extraordinary cold-flow per formance (<-60°F pour point). It helps improve shifting response and energy efficiency while reducing warm-up times.
OUTSTANDING WEAR PROTECTION
EXTENDS FLUID SERVICE LIFE
AMSOIL Synthetic Fuel Efficient Automatic Transmission Fluid is recommended for automatic transmissions and other applications requiring DEXRON® VI, MERCON® LV, SP, Honda DW-1, Nissan Matic S or Toyota WS.
AMSOIL Synthetic Fuel Efficient Automatic Transmission Fluid is backward compatible and replaces DEXRON® III fluids in older GM automatic transmissions. (DEXRON® VI specification supersedes the obsolete DEXRON® III in GM vehicles.)
*Not for use with CVT or Ford Type F applications.
HEALTH & SAFETY
You may have noticed that AMSOIL Fuel Efficient Synthetic (ATL) and Multi-Vehicle Synthetic ATF (ATF) are now recommended for electronically controlled continuously variable transmissions (eCVTs) in certain vehicles. eCVTs, such as those found on the Toyota Prius, are significantly different from belt- and chain-driven continuously variable transmissions (CVTs). Several automakers use CVT technology, so it’s important to understand the differences between belt-and chain-driven CVTs and eCVTs, which are closer to traditional step-type automatic transmissions in design.
The primary purpose of any transmission, regardless of type, is to transfer power from the engine through the drivetrain and, finally, to the wheels. To do so, it must work within a narrow engine rpm band to ensure it produces enough torque for the immediate needs of the vehicle and then transmit that torque to the driveline. Getting a heavy vehicle moving from a dead stop requires a lot of torque. Step-type automatic transmissions use a set of gears called planetary gears that work together in different combinations called gear ratios. These gear ratios make it possible to get a vehicle moving from a dead stop and continue a smooth pattern of acceleration all the way up to
Traditional automatic transmissions select a low gear ratio to get the vehicle moving from a dead stop. As the vehicle builds momentum, less torque is required to keep it moving and the transmission shifts to higher gear ratios in sequence, slowing the engine at each step until the vehicle is at cruise.
Traditional automatic transmissions have been in use in the U.S. for over half a century. The efficiency of this technology has been enhanced over the years, but there is always room for improvement. With ever-rising fuel economy standards, auto manufacturers spend a lot of time looking at ways to use the transmission to improve the engine’s efficiency. Each engine design produces its most efficient power at a predetermined rpm – the “sweet spot.”
When you drive a conventional step type automatic transmission, you feel the rpm rise and drop each time the transmission shifts to the next gear ratio. Each one of these bumps is an inefficiency that consumes extra fuel because the engine is taken out of its sweet spot. The same is true when you’re climbing a grade and the transmission drops into a lower gear, making the engine run faster and use more fuel. One way manufacturers address this issue is by adding more gear ratios. This has the benefit of shortening the duration of the bumps and gives the transmission more options to keep the engine at its optimum rpm. The inefficiencies can’t be completely eliminated, however, because the transmission is physically limited by a finite number of gear ratios.
CVTs take a different approach to managing rpm. Instead of gears, the most common CVTs in the U.S. use a metal belt or chain running between two pulleys. These pulleys are designed to spread open or squeeze closed under hydraulic pressure, forcing the belt or chain to ride higher or lower in them. The advantage of this system is the vehicle’s computer can quickly and continuously adjust the pulleys to whatever ratio is required for peak efficiency because it isn’t physically limited by gears. When driving a CVT equipped vehicle the driver pushes on the gas pedal and the CVT adjusts to keep the engine at its most efficient rpm through the entire acceleration process.
The eCVT found on the Toyota Prius and other hybrids differs from CVTs found in other vehicles, such as the 2013 Nissan Altima or 2012 Scion iQ, because it does not use a belt or chain connected to a pair of variable pulleys. Instead, an eCVT uses electric motor/generators to control the speeds of planetary gearset components. This allows the eCVT to continuously change the gear ratio, keeping the engine’s rpm in the sweet spot. Just like when driving other CVT-equipped vehicles, drivers of vehicles with eCVTs don’t feel the step change common to traditional automatic transmissions, yet the mechanisms (planetary gears) to achieve acceleration are largely the same.
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