Amsoil Dextron 3 Oil for 5 & 6 speeds -1Qt.

Amsoil Dextron 3 Oil for 5 & 6 speeds- 1Qt.
If you have questions please call  208-453-9800

Category: SKU: ATF-QT





Modern transmissions are more complicated than their predecessors. Today’s designs feature more gears, that require a steady supply of high-quality fluid.
Without it, wear and sludge formation can lead to reduced performance and even failure, requiring thousands of dollars in repairs.

AMSOIL OE Synthetic Automatic Transmission Fluid provides passenger-car/light-truck manual transmissions with excellent wear protection, sludge resistance, and extreme-temperature performance throughout original equipment manufacturer (OEM)-recommended drain intervals.

Although acceptable for use in all climates, this oil is especially well-suited to summer-like conditions; and while developed first and foremost with street performance in mind, is capable of supporting severe-duty use in competition applications.



TKX Five Speed 

T-56, T-45, 3650, 6060, Magnum six-speed, not recommended for 3550. TKO, TKO500/600. (See MTF below)  



Promotes Smooth, Shudder-Free Shifts
AMSOIL OE Synthetic ATF is formulated with friction modifiers that promote fast, smooth clutch engagement. As a result, drivers experience fast shift response and torque transfer for maximum drivability.

  • Protects against wear
  • Resists harmful sludge
  • Excellent cold-weather performance
  • Guards against leaks
  • Promotes smooth, shudder-free shifts


Outstanding Wear Protection
AMSOIL OE Synthetic ATF is durable. In normal and severe service, it resists wear to the transmission’s valve body, gears, clutch plates, and other vital parts, helping today’s complex and demanding transmissions achieve long life.

Resists Varnish
In elevated heat, AMSOIL OE Synthetic ATF’s thermally stable formulation guards against the harmful effects of thermal breakdown. It resists the formation of varnish that can stick valves, threatening transmission performance, and life. OE Synthetic ATF also resists heat-related evaporation and viscosity loss to help components stay clean and remain protected.

Reliable Cold-Weather Performance
AMSOIL OE Synthetic ATF remains fluid in sub-zero temperatures. It resists thickening and flows quickly for fast, reliable shifts during cold starts. Its excellent low-temperature fluidity also maximizes fuel efficiency.

Excellent Leak Protection
Formulated with seal conditioners, AMSOIL OE Synthetic ATF helps prevent seals and gaskets from drying out and cracking, reducing the risk of fluid leaks.


AMSOIL OE Multi-Vehicle Synthetic Automatic Transmission Fluid is recommended for transmissions.

Perfect for T5 World-class only, T45, 3650 & TKX 5-speed transmissions  (about 3 quarts)

All T56 6060, & magnum 6-speed transmissions  (about 4 quarts).


For TR3550, TKO & TKO 500/600 please click here


AMSOIL OE Synthetic Automatic Transmission Fluid should be changed according to your vehicle manufacturer’s recommendations.


This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the   Material Safety Data Sheet (MSDS).



Should AMSOIL not be available and you have a non-world class T5 please click this link for Lucas product alternative


Additional information

Weight 34 oz
Dimensions 6 × 5 × 3 in

Date Bulletions

Q & A

Why use automatic transmission fluid in a manual gearbox?

Some TREMEC transmissions are designed specifically to use automatic transmission fluids (ATF) for good shift quality in cold conditions, compatibility with synchronizer friction materials, and minimized parasitic drag to maximize power to the wheels.


Why not use hypoid gear oil?

Hypoid gear oils are designed to withstand sliding actions at the meshing interface of bevel gears.  Some hypoid oils contain extreme pressure additives that are corrosive to certain non-ferrous metals that are used in transmission parts like bushings and synchronizer rings.  Also, the friction coefficient of some hypoid gear oils may be incompatible and can cause poor shifting.  Both of these conditions can result in premature or excessive wear and failure.






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