Doc’s Diesel Duramax ULV Full Synthetic Automatic Transmission Fluid 55 Gallon Drum

Doc’s Diesel Transmission Fluid:

Doc’s Diesel Duramax ULV is the trusted choice for rugged reliability and long-haul peace of mind. Engineered for heavy-duty demands, this ultra-low-viscosity formula delivers dependable protection, smooth performance, and long-term durability across tough operating conditions.

Product Details:

• Full synthetic formulation with improved cold flow and oxidation resistance
• Corrosion inhibition that helps protect internal components from rust and breakdown
• Wear protection that maintains viscosity under extreme stress and temperature
• Ultra low viscosity for ideal flow, smooth operation, and consistent performance in all conditions

Fitment:

Vehicle Fitment:

• 2020–2026 Chevrolet/GMC Silverado/Sierra 3.0L Duramax 1500, 2500HD, and 3500HD with 10-speed transmissions

Doc's Part Number:

DOCSDEXULV-55G

Change Interval:

Above all recommendations, change according to your vehicle’s manufacturer's warranty.

• Transmission Fluid:
  • Normal Duty: Every 60,000 to 100,000 miles maximum
  • Severe Duty: Every 30,000 to 50,000 miles maximum