Castrol Classic ST 90 Gear Oil – 1 Litre: Essential Protection for Vintage Gearboxes (API GL-3)

Ensure the enduring performance and mechanical harmony of your classic vehicle’s transmission and differential with Castrol Classic ST 90 Gear Oil. This high-quality, mono-grade mineral gear oil (SAE 90) is precisely engineered with anti-oxidant and anti-wear additives, providing vital protection for gear teeth in gearboxes and axles. It’s an indispensable choice for a broad spectrum of vintage applications where a non-EP (Extreme Pressure) gear oil is specified.

Key Features & Benefits:

• Optimized for Classic Transmissions (API GL-3): Specifically formulated to meet the lubrication demands of older gearbox systems, offering appropriate protection without aggressive EP additives harmful to vintage components.

• Superior Wear Defense: Contains advanced anti-oxidant and anti-wear additives to effectively protect gear teeth against premature wear, extending the operational life of crucial transmission and differential parts.

• Yellow Metal Safe: Meticulously designed for safe compatibility with sensitive “yellow metals” like brass and bronze, commonly found in classic vehicle synchronizers and bearings, preventing corrosion and damage.

• Broad Application Suitability: Ideal for a wide array of gear types, including helical, spur, bevel, and worm gears.

• Perfect for Straight Cut Gears: An excellent choice for vehicles featuring straight cut gears, ensuring optimal performance and protection.

• Authentic Specification Match: The recommended lubricant where “Castrol Swanshot” was originally specified, upholding the vehicle’s authentic performance characteristics.

• Addresses Historical Wear: Its formulation is particularly beneficial for older vehicles that may have experienced prior wear, helping to minimize further degradation and support continued smooth operation.

• Legacy of Excellence: Backed by over a century of Castrol’s unparalleled expertise in developing transmission fluids, this product is part of a trusted range that has served as factory-fill and is crucial for maintaining vintage vehicle specifications.

• Adhere to Original Recommendations: Empowers classic vehicle owners to faithfully follow the manufacturer’s original handbook recommendations, preserving the authenticity and peak performance of their cherished automobile