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SOLAR Optima Series Automatic Manual Gear Oils GL-4 API 85W140

Description

Solar Manual Gear Oil SAE 85W-140 GL-4 is a premium quality heavy-duty gear lubricant formulated using high-quality mineral base oils and selected performance additives. It is designed to meet the demanding requirements of manual transmissions, differentials, and axle assemblies that require API GL-4 level of performance. This oil ensures excellent protection against wear, corrosion, rust, and oxidation under high loads and extreme pressure conditions.

Available API
85W140
Applications
  • Manual gearboxes and differentials of commercial vehicles, trucks, buses, and off-highway equipment.
  • Axles and transmission systems where an API GL-4 gear oil of SAE 85W-140 viscosity grade is recommended.
  • Ideal for vehicles operating under moderate to heavy loads and severe service conditions.
Features & Benefits
    • Enhanced EP Protection – Protects gears from scuffing and wear under high load conditions.
    • Excellent Thermal Stability – Resists degradation at high operating temperatures.
    • Superior Rust & Corrosion Protection – Safeguards internal components during operation and shutdown.
    • Smooth Gear Shifting – Ensures consistent performance and reliable operation in varied temperatures.
    • Extended Drain Intervals – Reduces maintenance and operational downtime.
    • Seal Compatibility – Minimizes the risk of seal deterioration and leakage.
Recommended For:
  • Automotive manufacturers requiring API GL-4 SAE 85W-140 gear lubricants.
  • Light and heavy commercial vehicles operating under moderate to severe conditions.
  • Rear axles, transaxles, and manual transmissions not requiring GL-5 level EP additives.
Key Properties

Physical Properties


Test Parameters

Test Methods

Units

Results

Appearance

Visual

NONE

Bright & Clear

Density @ 15°C

ASTM D4052

g/cm³

0.900 – 0.915

Kinematic Viscosity @ 40°C

ASTM D445

cSt

320 – 360

Kinematic Viscosity @ 100°C

ASTM D445

cSt

25.0 – 28.0

Viscosity Index

ASTM D 2270

NONE

≥ 95

Flash Point (COC)

ASTM D 92

°C

≥ 220

Pour Point

ASTM D 97

°C

≤ -12

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