DELAYS TO DISPATCH:
As a Cornish business, we have been affected by Storm Goretti. Our couriers aren't collecting today and we're unable to pack orders, so unfortunately there will be some delays to order dispatch. We apologise for any delay and the resulting inconvenience.

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Please use our separate Oil & Parts Finder to search by vehicle registration.

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Free UK delivery £80+ (geographic restrictions apply)
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01209 202944

API GL-4 Gear Oil

API GL-4 oils are for various conditions - light to heavy. Designed for bevel and hypoid gears which have small displacement of axes, and axle units. Recommended for non-synchronized gearboxes of lorries, tractors and buses and for main and other gears of all vehicles. These oils are basic for synchronized gearboxes.

You'll find what specification gear oil your vehicle requires in your handbook, if you're still not sure, contact the Opie Experts for a custom recommendation.

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104 Products (Viewing: 1 - 60 of 104)

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Motul Gear 300 75w-90 Fully Synthetic Racing Transmission & Differential Oil

Motul Gear 300 75w-90 Fully Synthetic Racing Transmission & Differential Oil

Opie Price
£20.95
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Millers Oils Motorsport CRX 75w-90 NT+ Nanodrive Fully Synthetic Transmission Oil

Millers Oils Motorsport CRX 75w-90 NT+ Nanodrive Fully Synthetic Transmission Oil

RRP £22.95
£17.95
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RED LINE Synthetic Manual Transmission Lubricant MTL 75W-80 GL4

RED LINE Synthetic Manual Transmission Lubricant MTL 75W-80 GL4

1 US Quart (0.946 litre)

RRP £28.20
£27.95
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Fuchs TITAN SINTOFLUID FE SAE 75W Synthetic Manual Transmission Oil

Fuchs TITAN SINTOFLUID FE SAE 75W Synthetic Manual Transmission Oil

1 Litre

RRP £11.92
£10.99
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Castrol TRANSMAX Manual EP 80W-90 Mineral Transmission Fluid

Castrol TRANSMAX Manual EP 80W-90 Mineral Transmission Fluid

Opie Price
£8.95
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Millers Oils Motorsport CRX LS 75w-140 NT+ Nanodrive Fully Synthetic Transmission Oil

Millers Oils Motorsport CRX LS 75w-140 NT+ Nanodrive Fully Synthetic Transmission Oil

RRP £23.95
£17.95
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RED LINE Synthetic Manual Transmission MT-LV 70W/75W

RED LINE Synthetic Manual Transmission MT-LV 70W/75W

1 US Quart (0.946 litre)

RRP £28.20
£27.95
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Millers Oils Motorsport CRX LS 75w-90 NT+ Nanodrive Fully Synthetic Transmission Oil

Millers Oils Motorsport CRX LS 75w-90 NT+ Nanodrive Fully Synthetic Transmission Oil

RRP £21.95
£21.95
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Motul Motylgear 75w-90 Technosynthese Transmission & Differential Oil

Motul Motylgear 75w-90 Technosynthese Transmission & Differential Oil

RRP £14.95
£12.95
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Millers Oils Motorsport CRX 75w NT+ Nanodrive Fully Synthetic Transmission Oil

Millers Oils Motorsport CRX 75w NT+ Nanodrive Fully Synthetic Transmission Oil

RRP £89.95
£66.95
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Millers Oils Motorsport CRX 75w-80 NT+ Nanodrive Fully Synthetic Transmission Oil

Millers Oils Motorsport CRX 75w-80 NT+ Nanodrive Fully Synthetic Transmission Oil

RRP £23.95
£19.99
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Castrol TRANSMAX Manual EP 80W Mineral Transmission Fluid

Castrol TRANSMAX Manual EP 80W Mineral Transmission Fluid

Opie Price
£9.95
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TotalEnergies Traxium Gear 8 75W-80 Manual Transmission Gear Oil

TotalEnergies Traxium Gear 8 75W-80 Manual Transmission Gear Oil

1 Litre

Opie Price
£11.95
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Millers Oils Classic Gear Oil EP 80W-90 GL4

Millers Oils Classic Gear Oil EP 80W-90 GL4

RRP £12.95
£11.95
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Millers Oils XF Premium MTF 75w Fully Synthetic Transmission Oil

Millers Oils XF Premium MTF 75w Fully Synthetic Transmission Oil

Opie Price
£8.95
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Motul Gear Power 75w-80 Fully Synthetic Manual Transmission Fluid

Motul Gear Power 75w-80 Fully Synthetic Manual Transmission Fluid

1 Litre

RRP £19.96
£18.95
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Millers Oils Classic Gear Oil EP 140 GL4

Millers Oils Classic Gear Oil EP 140 GL4

Opie Price
£46.99
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Millers Oils Motorsport CRX 75w-140 NT+ Nanodrive Fully Synthetic Transmission Oil

Millers Oils Motorsport CRX 75w-140 NT+ Nanodrive Fully Synthetic Transmission Oil

RRP £21.95
£16.99
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Millers Oils XF Premium MTF 75w-80 Fully Synthetic Transmission Oil

Millers Oils XF Premium MTF 75w-80 Fully Synthetic Transmission Oil

RRP £9.95
£9.95
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Castrol TRANSMAX Universal 75W-90 Multipurpose Gear Oil

Castrol TRANSMAX Universal 75W-90 Multipurpose Gear Oil

Opie Price
£17.95
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Fuchs TITAN SINTOFLUID SAE 75W-80 Synthetic Manual Transmission Fluid

Fuchs TITAN SINTOFLUID SAE 75W-80 Synthetic Manual Transmission Fluid

RRP £14.20
£13.99
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Millers Oils EE Performance MTF 75w Gear Oil

Millers Oils EE Performance MTF 75w Gear Oil

Opie Price
£19.99
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Comma MV MTF Plus 75w Fully Synthetic Manual Transmission Fluid

Comma MV MTF Plus 75w Fully Synthetic Manual Transmission Fluid

Opie Price
£13.99
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Mobil 75W-90 Multi-Vehicle Manual Transmission Fluid

Mobil 75W-90 Multi-Vehicle Manual Transmission Fluid

1 Litre

Opie Price
£14.95
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Comma EP 80w-90 GL-5 Mineral Manual Transmission Fluid

Comma EP 80w-90 GL-5 Mineral Manual Transmission Fluid

Opie Price
£7.99
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Comma MV MTF Plus 75w-80 Fully Synthetic Manual Transmission Fluid

Comma MV MTF Plus 75w-80 Fully Synthetic Manual Transmission Fluid

Opie Price
£11.95
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Millers Oils Classic Mini Oil 20w-50 Engine Oil

Millers Oils Classic Mini Oil 20w-50 Engine Oil

RRP £38.95
£37.99
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Millers Oils XF Premium MTF 75w-90 Fully Synthetic Transmission Oil

Millers Oils XF Premium MTF 75w-90 Fully Synthetic Transmission Oil

RRP £13.95
£11.95
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Petronas Tutela Geartech MTF 75W-85 Fully Synthetic Manual Transmission Fluid

Petronas Tutela Geartech MTF 75W-85 Fully Synthetic Manual Transmission Fluid

1 Litre

Opie Price
£17.95
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Millers Oils EE Performance MTF 75w90 Gear Oil

Millers Oils EE Performance MTF 75w90 Gear Oil

RRP £25.95
£24.95
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Millers Oils Motorsport CTV Mini 20w-50 Nanodrive Semi Synthetic Engine & Transmission Oil

Millers Oils Motorsport CTV Mini 20w-50 Nanodrive Semi Synthetic Engine & Transmission Oil

RRP £60.95
£43.99
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Amsoil Synthetic Manual Transmission & Transaxle Gear Lube 75W-90

Amsoil Synthetic Manual Transmission & Transaxle Gear Lube 75W-90

1 US Quart

Opie Price
£21.95
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Motul Motylgear 75w-80 EP Technosynthese Car Transmission Fluid

Motul Motylgear 75w-80 EP Technosynthese Car Transmission Fluid

RRP £14.95
£11.95
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Fuchs TITAN SINTOPOID LS SAE 75W-90 synthetic gear oil

Fuchs TITAN SINTOPOID LS SAE 75W-90 synthetic gear oil

1 Litre

RRP £17.26
£15.95
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Castrol TRANSMAX Manual Transaxle 75W-90 Fully Synthetic Transaxle Fluid

Castrol TRANSMAX Manual Transaxle 75W-90 Fully Synthetic Transaxle Fluid

1 Litre

Opie Price
£16.99
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Motul HD 80w-90 Extreme Pressure Mineral Transmission & Differential Fluid

Motul HD 80w-90 Extreme Pressure Mineral Transmission & Differential Fluid

RRP £19.95
£9.95
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Fuchs Titan Supergear Plus SAE 80W-90 High Performance Gear Oil
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Fuchs Titan Supergear Plus SAE 80W-90 High Performance Gear Oil

Opie Price
£99.95
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Motul Multi DCTF Synthetic Dual Clutch Transmission Fluid (Dry & Wet)

Motul Multi DCTF Synthetic Dual Clutch Transmission Fluid (Dry & Wet)

1 Litre

RRP £19.96
£17.95
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Valvoline 75w-90 Full Synthetic Gear Oil

Valvoline 75w-90 Full Synthetic Gear Oil

1 Litre

Opie Price
£14.95
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EXOPRO 75w-90 SS GL4 and GL5 Semi Synthetic Extreme Pressure Gear Oil

EXOPRO 75w-90 SS GL4 and GL5 Semi Synthetic Extreme Pressure Gear Oil

Opie Price
£34.99
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Petronas Tutela Multi MTF 700 75W-80 Fully Synthetic Manual Transmission Fluid

Petronas Tutela Multi MTF 700 75W-80 Fully Synthetic Manual Transmission Fluid

1 Litre

Opie Price
£9.95
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Mobil Mobilube 1 SHC 75W-90 Fully Synthetic High Performance Manual Gearbox Oil

Mobil Mobilube 1 SHC 75W-90 Fully Synthetic High Performance Manual Gearbox Oil

Opie Price
£15.95
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Castrol TRANSMAX Manual Multivehicle 75W-90 Fully Synthetic Transmission Fluid

Castrol TRANSMAX Manual Multivehicle 75W-90 Fully Synthetic Transmission Fluid

1 Litre

Opie Price
£18.95
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Millers Oils Trident Professional MTF 75w-90 Semi Synthetic Transmission Oil

Millers Oils Trident Professional MTF 75w-90 Semi Synthetic Transmission Oil

RRP £12.95
£10.99
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Motul Gearbox 80w-90 EP Mineral Gear & Differential Oil

Motul Gearbox 80w-90 EP Mineral Gear & Differential Oil

1 Litre

RRP £19.96
£17.95
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Motul Gear Power LV 70w Fully Synthetic Manual Transmission Fluid

Motul Gear Power LV 70w Fully Synthetic Manual Transmission Fluid

1 Litre

RRP £19.96
£18.95
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Comma EP 75w-80 Plus Mineral Manual Transmission Fluid

Comma EP 75w-80 Plus Mineral Manual Transmission Fluid

Opie Price
£8.95
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Comma EP 80w-90 GL-4 Mineral Manual Transmission Fluid

Comma EP 80w-90 GL-4 Mineral Manual Transmission Fluid

Opie Price
£7.99
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Comma SX 75w-90 GL-5 Semi Synthetic Transmission Fluid

Comma SX 75w-90 GL-5 Semi Synthetic Transmission Fluid

Opie Price
£8.95
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Elf Tranself NFX SAE 75W EP Synthetic Technology Transmission Fluid

Elf Tranself NFX SAE 75W EP Synthetic Technology Transmission Fluid

Opie Price
£14.95
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Mobil EP 75W-80 Multi-Vehicle Mineral Manual Transmission Fluid

Mobil EP 75W-80 Multi-Vehicle Mineral Manual Transmission Fluid

1 Litre

Opie Price
£13.99
Add To Basket
Price Beater
Mobil 75W Multi-Vehicle Manual Transmission Fluid

Mobil 75W Multi-Vehicle Manual Transmission Fluid

1 Litre

Opie Price
£14.95
Add To Basket
Price Beater
Mobil 75W-80 Multi-Vehicle Manual Transmission Fluid

Mobil 75W-80 Multi-Vehicle Manual Transmission Fluid

1 Litre

Opie Price
£13.99
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Castrol Transmax Agri MP 15W-40
Free Shipping

Castrol Transmax Agri MP 15W-40

20 Litres

Opie Price
£141.95
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Silkolene BOA 80W-90 For Gearboxes And Final Drives GL4 GL5

Silkolene BOA 80W-90 For Gearboxes And Final Drives GL4 GL5

1 Litre

Opie Price
£11.95
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TotalEnergies Traxium Dual 9 FE 75w-90 Commercial Vehicle Gear Oil

TotalEnergies Traxium Dual 9 FE 75w-90 Commercial Vehicle Gear Oil

1 Litre

Opie Price
£13.99
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Amsoil Synthetic SEVERE Gear Oil 75w-90

Amsoil Synthetic SEVERE Gear Oil 75w-90

Opie Price
£24.95
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Millers Oils Ginetta Tech LS 75w-90 Fully Synthetic Competition Gear Oil

Millers Oils Ginetta Tech LS 75w-90 Fully Synthetic Competition Gear Oil

1 Litre

RRP £34.00
£32.95
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Millers Oils Ginetta Tech 75w-90 Fully Synthetic Competition Gear Oil

Millers Oils Ginetta Tech 75w-90 Fully Synthetic Competition Gear Oil

1 Litre

RRP £29.99
£28.99
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Price Beater
Comma MV MTF Plus 75w-90 Fully Synthetic Manual Transmission Fluid

Comma MV MTF Plus 75w-90 Fully Synthetic Manual Transmission Fluid

Opie Price
£13.99
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A wide selection of gear oil meeting the API GL-4 gear oil specification available for purchase here.
Free UK delivery £80+ (geographic restrictions apply)
60 Day Returns
Free Expert Advice
No Leak Guarantee
01209 202944