AUTHORIZED DEALER
SUPERIOR SYNTHETICS LLC
Ray & Kathy Yaeger
Green Bay, WI & Clintonville
CALL (715) 823-6525

WHEN TO CHANGE TRANSMISSION FLUID

It depends on your vehicle and driving habits. That’s a cop-out. But, it’s true.


Automatic-transmission-fluid-change recommendations vary from one original equipment manufacturer (OEM) to another. Plus, if your driving habits are like most motorists and fall under the “severe” designation (towing, hauling, daily short trips less than 10 miles, etc.), many OEMs recommend changing transmission fluid more frequently.

Check your owner’s manual

Start by looking in your vehicle owner’s manual. It’ll provide maintenance recommendations, typically in a table in the back.The 2017 Ford F-150, for example, requires automatic transmission fluid changes every 150,000 miles in normal service, 30,000 miles if you tow and haul. My wife’s Honda CR-V calls for transmission fluid changes every 90,000 miles in normal service, 30,000 miles in severe service. Some transmissions are considered “fill-for-life”.These differences illustrate the importance of digging your owner’s manual out from under the napkins and broken sunglasses in your glove box and checking for yourself.

Go by the book, but when you don’t…

But, really, how many of us dutifully follow the recommendations in our owner’s manuals down to the mile? True, some of us look forward to working in the garage on the weekend. But most motorists don’t have the time, which means fluid-change recommendations morph into loose suggestions, something you fit into your schedule “sometime before winter, maybe.”But soon you’re loading down the Family Truckster for the first summer trip to the beach, yet the tranny fluid still hasn’t been changed.Not good, especially if you tow or haul.

Heat kills transmissions

Over time, transmission fluid oxidizes (chemically breaks down). High heat generated from towing and hauling speeds the process. Fluid that has broken down can cause sludge and varnish to form, which clogs narrow oil passages and contributes to clutch glazing. Soon, your vehicle can begin to shift hard, jerk or hesitate.In these cases, wouldn’t it be great to use a transmission fluid formulated with reserve protection against heat in case life gets in the way of recommended maintenance?

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-consuming and costly repair or a complete transmission replacement become the only options.

The AMSOIL Advantage

AMSOIL Signature Series Synthetic Automatic Transmission Fluid is specifically formulated to withstand the rigors of daily towing, elevated temperatures and challenging terrain. Its wax-free formulation remains fluid in sub-zero temperatures and ensures excellent shift response, energy efficiency and warm-up times. It provides reserve protection during heavy use and even abuse.
AMSOIL Signature Series Synthetic Automatic Transmission Fluid’s built-in reserve protection means it lasts for twice the OEM’s severe-service drain interval. That means you can rest assured your transmission is protected, even if service is delayed.
AMSOIL Signature Series Synthetic Automatic Transmission Fluid
Built-in reserve protection means it lasts for twice the OEM’s severe-service drain interval. That means you can rest assured your transmission is protected, even if service is delayed.

Transmissions in commercial vehicles, SUVs, trucks and vans – particularly those used for hauling or towing – are subjected to severe-service operation and increased heat. Elevated temperatures cause fluids to break down, allowing damaging metal-to-metal contact and the formation of sludge and deposits. The problem is worse in modern transmissions with more gears, clutch packs and narrow oil passages that require clean, high-quality fluid to achieve maximum performance and life.

AMSOIL Signature Series Synthetic Automatic Transmission Fluid is specifically formulated to withstand the rigors of heavy towing, elevated temperatures and challenging terrain. It remains fluid in sub-zero temperatures and provides reserve protection during heavy use and even abuse.
AMSOIL Signature Series Multi-Vehicle Synthetic
Specifically formulated to withstand the rigors of heavy towing, elevated temperatures and challenging terrain. It remains fluid in sub-zero temperatures and provides reserve protection during heavy use and even abuse.

Transmissions in commercial vehicles, SUVs, trucks and vans – particularly those used for hauling or towing – are subjected to severe-service operation and increased heat. Elevated temperatures cause fluids to break down, allowing damaging metal-to-metal contact and the formation of sludge and deposits. 

AMSOIL Signature Series Multi-Vehicle Synthetic ATF is engineered to outperform conventional automatic transmission fluids and exceed the performance requirements of most North American, European and Asian vehicles. This sophisticated formulation provides outstanding performance and protection in the severe operating conditions of today’s most advanced transmission designs.

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 (715) 823-6525


 N2837 Rustic Dr 
Clintonville, WI, 54929
United States

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