CRC 85W90 Gear Oil 1 Gallon — API/GL-4 Hypoid, Yellow-Metal Safe, Anti-Wear/Anti-Rust

CRC Sta-Lube 85W90 API/GL-4 is a multi-purpose hypoid gear oil formulated to protect gears and differentials across a wide temperature range while remaining safe for yellow metals.

Designed for automotive, truck, and bus service where API/GL-3 or GL-4 oils are specified, this 1-gallon hypoid lubricant blends low pour characteristics and high-temperature stability to keep gear trains running smoothly. Its anti-rust and extreme-pressure (EP) anti-wear additives help reduce metal-to-metal contact and corrosion, while the non-corrosive formulation protects copper, bronze, and other non-ferrous bearings and bushings often found in drivetrains.

How does this oil handle temperature extremes?

CRC Sta-Lube 85W90 balances low-temperature flow with thermal resilience so it mobilizes quickly at cold start and maintains film strength at elevated operating temperatures. That makes it suitable for environments with variable seasonal conditions.

• Low pour point for better cold-weather circulation
• High-temperature stability to resist breakdown and maintain protection
• Stable viscosity control to support consistent gear tooth lubrication

Will it harm yellow metals like brass or bronze in my equipment?

No — this formulation is non-corrosive to copper, bronze, and other non-ferrous alloys. CRC specifically engineered the additive package to avoid attacking delicate bearings and bushings common in transmissions and differentials.

• Tested safe for yellow-metal components
• Prevents corrosion that can lead to pitting or wear on alloys
• Suitable for mixed-metal gearboxes and assemblies

What applications is CRC Sta-Lube 85W90 best suited for?

This gear oil is versatile for passenger cars, light and heavy trucks, and buses that call for API/GL-3 or GL-4 gear lubes. It’s appropriate for standard transmissions, hypoid differentials, and other gear sets requiring EP protection without risk to non-ferrous parts.

• Standard manual transmissions and hypoid differentials
• Automotive and commercial vehicle drivetrain components
• Situations where yellow-metal compatibility is required

How does the product protect gears from wear and corrosion?

The oil contains both anti-wear and anti-rust additives plus extreme-pressure agents that form protective films on gear teeth and bearings. These chemistries reduce scuffing and corrosive attack, extending component life when used and changed per manufacturer intervals.

• EP additives reduce metal-to-metal contact under load
• Anti-rust additives inhibit corrosion in wet or humid conditions
• Balanced formulation for long-term gear surface protection

Who is this for: CRC Sta-Lube 85W90 GL-4 is aimed at mechanics, fleet managers, and DIY technicians who need a reliable, yellow-metal-safe hypoid gear oil in a convenient 1-gallon container. Choose this product when your vehicle or equipment specifies API/GL-3 or GL-4 performance and you want dependable protection across broad temperature ranges without compromising non-ferrous components.