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504 Posts
Discussion Starter #1
Summer is here and don't fall behind on your Allison service!

Allison Service Package (Fluid & Filter)
Dmaxstore has put together this great package for our members to correctly service their Allison transmission. These kits provide the correct amount of fluid and spin on external filter for 2001-Current Duramax diesels using standard Allison transmission pans.
Kit includes:

  • 2 Gallons of Allison Transynd synthetic fluid- (We have found this fluid to be far superior to anything else available.) It is completely compatible with Dexron 3 and Dexron 6 designed specifically for the Allison transmission.
  • 1 genuine Allison spin on transmission filter
Dmaxstore Note: (If you you have an Allison deep sump pan you will need 3 gallons of fluid. Larger aftermarket pans will need approximately 3.5-4 gallons If you are dropping the pan to replace the internal filter you will use approximately 2.5 gallons on a standard sump pan)

  • Remove 15 mm drain plug on transmission pan and drain old fluid, this should be 7.4 quarts unless you are low on fluid to begin, reinstall drain plug.
  • Remove old spin on filter, remove filter magnet located on top of old filter and clean it with a rag. Install magnet on new filter and fill with Transynd fluid, reinstall filter on transmission.
  • Using transmission funnel fill transmission with 7.4 quarts of Transynd and check level.
  • We recommend this service every 30-40 thousand miles to keep your Allison running its best. Allison does not recommend using a machine to filter or flush the transmission.
More Info:
Tests prove that TranSynd™ will outperform other oils on every level:

  • Providing superior wear resistance
  • Extending drain intervals
  • Protecting other transmission components
  • Resisting oxidation and sheardown
  • Improving viscosity stability
Gears, bearings, bushings, clutches, thrustwashers and other components benefit from improved viscosity stability and cooler lube oil.
TranSynd™ heavy-duty automatic transmission fluid, a remarkable synthetic oil exclusively formulated by Castrol for Allison Automatics, extends Allison transmission oil drain intervals 300%.

TranSynd's viscosity stability and resistance to thermal breakdown protect your Allison Automatic far better, far longer. And TranSynd™ is highly resistant to oxidation, minimizing chances for sludge and varnish deposits.

You invested in Allison Automatics because you wanted your vehicles to be more productive, more profitable. New TranSynd™ transmission fluid not only protects your investment, it improves its return.

How to get the best out of the best. TranSynd™ is a new, synthetic automatic transmission fluid developed by Castrol and specially engineered for Allison Transmission. It's specifically designed to make Allison Automatic-equipped vehicles even more efficient, more productive and more profitable to operate.

Natural limits.
Conventional transmission fluids have performance additives blended in. Performance additives include friction modifiers, anti-wear agents, antioxidants, dispersants, detergents, rust/corrosion inhibitors, seal swellers, anti-foamants and more.

These other oils undergo physical and chemical changes with extended use. Physical changes include sheardown- permanent viscosity loss.

Chemical change results from oxidation when oxygen combines with oil molecules to produce peroxides and organic acids. The oil thickens over and becomes more acidic. Sludge and varnish deposits erode shift quality and clutch durability and cause increased component wear.

It's a vicious- and viscous- cycle. (Viscosity- the measure of an oil's resistance to flow at a given temperature- is the single most important physical property of automatic transmission fluids.)

More than a lubricant.
The transmission fluid doesn't just lubricate. It cools and transmits power, too.

Time for a change.
TranSynd™ automatic transmission fluid defies conventional oils- and wisdom. Its unique molecular structure produces excellent antioxidant properties. It contains none of the Viscosity Index Improvers which are added to other oils to maintain viscosity, so it doesn't sheardown.

Consequently, TranSynd™ is more chemically and physically stable than other oils.

504 Posts
Discussion Starter #2
If you looking to upgrade to a deep style pan, don't over look the factory allison deep pan!

Allison Deep Sump Package Deal
Fits 2001-Current Chevy/GMC 2500/3500HD

  • 1-Allison deep sump transmission pan
  • 1-Allison deep sump Internal filter
  • 1-Allison spin on external filter
  • 3-Gallons Transynd synthetic fluid

A great value and benefit all in one for your allison. Get the extra 4 qts in the system!

15,711 Posts

7 Posts
Ordered the deep kit with filter lock and magnet. Will feel better towing the travel trailer and boat this summer.

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