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API GL-5 Gear Oil

Keep your gearbox and differentials in peak condition with high-performance API GL-5 gear oil from Opie Oils. Designed for extreme pressure applications, API GL-5 transmission oil offers excellent protection against wear, corrosion, and high-temperature breakdown. Browse our full range below to find the ideal gear oil for your vehicle.

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77 Products (Viewing: 60 - 77 of 77)

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Castrol TRANSMAX Axle EPX 85W-140 Multipurpose Axle Fluid
Opie Price
£46.99
Price Beater
Mobil Mobilube HD 80W-90 GL-5 Heavy Duty Gear Oil
RED LINE Synthetic Gear Oil 75W-90NS GL5 (non Limited Slip)
Fuchs Titan Cytrac SL Fully Synthetic Gearbox Oil 75W-90
RED LINE Synthetic Gear Oil 75W-110 GL5

1 US Quart (0.946 litre)

RRP £28.20
£27.95
Price Beater
Fuchs Titan Supergear Plus SAE 80W-90 High Performance Gear Oil
Free Shipping
Opie Price
£118.99
Price Beater
Castrol TRANSMAX Limited Slip Z 85W-90 Mineral Axle Fluid
Fuchs Titan Supergear LS 80W-90 High Performance Limited Slip Hypoid Gear Oil
Millers Oils Trident Professional MTF 75w-90 Semi Synthetic Transmission Oil
Opie Price
£13.99
Price Beater
Castrol TRANSMAX Axle Long Life 75W-90 Fully Synthetic Rear Axle Fluid
Castrol TRANSMAX Universal 75W-90 Multipurpose Gear Oil
Opie Price
£22.99
Price Beater
Shell Spirax S5 ATE 75W-90 Synthetic Technology High Performance Gear Oil
Castrol TRANSMAX Axle EPX 80W-90 Multipurpose Axle Fluid
Opie Price
£11.95
Price Beater
RED LINE SuperLight ShockProof Gear Oil 70w-75

1 US Quart (0.946 litre)

RRP £30.60
£28.99
Price Beater
Millers Oils Classic Differential Oil 85W-140 GL5
RRP £19.96
£17.95
Price Beater
Motul Motylgear 75w-80 EP Technosynthese Car Transmission Fluid
Opie Price
£18.95
Price Beater
Fuchs Titan Race Gear 90 LS High Performance Gear And Limited Slip Diff Oil
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GL-5 specification gear oils are made for severe conditions, containing up to 6.5% effective anti-scuffing additives. The general application of oils in this class is for hypoid gears with significant displacement of axes. The most common use of GL5 oils is in differentials, but they are often used in gearboxes and sometimes in transfer boxes.

There is a lot of out-of-date and incorrect information about GL5 oils being unsafe for use in a lot of gearboxes. If you are concerned about that, please contact our expert team for more details, but generally, gearboxes are fine with GL5 oils.

At Opie Oils, we stock a comprehensive selection of API GL-5 oil, with options from leading brands such as Castrol, Millers Oils, Red Line, and LIQUI MOLY. Whether you need a mineral, semi-synthetic, or fully synthetic formula, we have the perfect solution to meet your vehicle’s specifications.

Shop for GL-5 gearbox oil at Opie Oils today, and don’t forget to explore our full range of transmission fluids and differential oils to keep your vehicle running at its best.