Castrol 15B840 Syngear CD-50 Synthetic Manual Transmission Fluid 35 lb Pail

Castrol Syngear CD-50 is a specially formulated, fully synthetic transmission fluid engineered for extended drain intervals and severe service in heavy-duty manual transmissions requiring a non-EP gear or transmission fluid. Packaged in a convenient 35 lb pail, this SAE 50W lubricant delivers reliable protection across a wide range of operating conditions.

Key Features:

• 100% Synthetic Base Stock: Provides greater load-carrying ability and excellent thermal stability for improved fuel economy and longer equipment life
• High Viscosity Index & Low Pour Point: Ensures superior all-climate, year-round performance in both extreme cold and high-temperature environments
• Outstanding Shear Stability: Maintains viscometric stability under all operating conditions, contributing to fuel savings and extended service intervals
• Anti-Wear Additive Package: Protects bearings and gears from wear during extreme service and harsh weather conditions
• Rust, Oxidation & Corrosion Inhibitors: Safeguards bearings, synchronizers, and other transmission components to reduce downtime
• Non-EP Formula: A straight-weight, non-extreme pressure lubricant designed specifically for transmissions that require this fluid type

Approvals & Specifications:

• SAE Grade: 50W
• Eaton Roadranger PS164 REV7 Approved — supports up to 500,000-mile drain intervals
• Meritor Extended Drain Approved (Publication TP-90014)
• Meets requirements for Dana synchronized and non-synchronized transmissions
• Viscosity at 40°C: 130.4 cSt (ASTM D-445)
• Viscosity at 100°C: 17.2 cSt (ASTM D-445)
• Viscosity Index: 148 (ASTM D2270)

Castrol Syngear CD-50 is the premium synthetic choice for fleet operators and heavy-duty truck applications where extended service life, transmission protection, and fuel efficiency are critical priorities.