Fits: 2001 thru 2019 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7/LLY/LBZ/LMM/L5P Duramax Diesel

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 a DmaxStore Performance spin on external filter for 2001-2019 Duramax diesels using standard Allison transmission pans.

Includes:

• 2x 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.
• 1x DmaxStore Performance Transmission Filter (Standard or Extended)

DmaxStore Notes:

• If 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

Castrol TranSynd 668 is a premium, full-synthetic automatic transmission fluid specifically formulated for Allison Transmission® on-highway automatic transmissions. TranSynd 668 provides oxidative stability, anti-wear performance, and friction durability, as well as TES 668™ specification differentiators such as extended anti-shudder durability and extended clutch friction durability. This fluid features an Allison TES 668 approval. The TES 668 spec is fully backwards compatible for TES 295® applications.

Transynd Features:

• Delivers improved gear protection
• Delivers extended anti-shudder durability
• Delivers extended clutch-friction durability
• Excellent corrosion and foaming resistance
• Excellent thermal and oxidative stability that helps to prevent deposits and oil thickening
• Excellent transmission cleanliness under all conditions permits extended oil-drain intervals and decreased servicing
• Excellent temperature reduction through reduced friction leads to longer oil and component life
• Outstanding cold-flow properties enable faster oil flow to all critical components, particularly during cold starts
• Optimized frictional characteristics gives smoother gear changing at all ambient temperatures and load conditions
• Excellent shear stability properties help to retain full transmission performance over the entire oil-drain interval

Service instructions(adjust fluid amount to suit your pan size):

• 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.