Allison Transmissions Transynd 668 Full Synthetic Transmission Fluid | 1Gal


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Transynd 668 Full Synthetic Transmission Fluid | 1Gal
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Product Information

Built For Performance

Conventional transmission fluids have performance additives blended in friction modifiers, anti-wear agents, antioxidants, dispersants, detergents, rust/corrosion inhibitors, seal swell agents, anti-formants, and more. But, because the base fluid is petroleum, conventional fluids do not provide the thermal resistance of Duramax full synthetic transmission fluid - TranSynd. With extended use, petroleum-based fluids react to oxidation much faster and more detrimentally, overwhelming the effectiveness of the dispersants and detergents. The oil thickens and becomes more acidic. Mechanical stress leads to shear, resulting in permanent viscosity loss. Thinner oil means less lubrication. Sludge and varnish deposits erode shift quality and clutch durability, causing increased component wear.

TranSynd, on the other hand, is formulated from pure synthetic lubricants with inherent thermal and viscosity advantages. Performance additives are then tailored to the unique molecular structure and excellent antioxidant properties, resulting in a lubricant that is far more chemically and physically stable than other oils and virtually impervious to shear.


  • Full Synthetic ATF
  • Extended Transmission Life
  • Better Protection


  • Formulated From Pure Synthetic Lubricants
  • Best Synthetic Fluid For Allison Transmissions
  • Helps To Keep Your Duramax Running Smoothly

What's In The Box

  • 1 Gallon Of TRANSYND Full Synthetic ATF

Better Protection With Full Synthetic ATF

ATF (Automatic Transmission Fluid) in a Duramax Allison transmission is more than just a lubricant; it's a critical component of the transmission. This automatic transmission fluid transmits energy between the engine and driveshaft, removes heat, lubricates, enhances seals, protects, and acts to maintain constant friction properties between friction plates and reaction plates. TranSynd fulfills all of these functions far better than conventional automatic transmission fluids.

Full Synthetic Vs Conventional Transmission Fluid

Since full synthetic transmission fluids allow for extended drain intervals, TranSynd helps lower the costs for maintenance and downtime on your Duramax. You save on the cost of transmission fluid, replacement filters, the disposal, and liability of used fluid. Most importantly, you benefit from reduced wear, better performance, and longer service life from your Allison Automatic. Bottom line: the superior lubricating protection of a full synthetic transmission fluid such as TranSynd results in even greater productivity and lower operating expenses.

Transynd exceeds Allison TES 295 and is engineered by industry leader Castrol.

Fits Years

2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022

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