Top 7 Gearbox Oil Additive UK – Engine Oil Additives

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1. Liqui Moly

Liqui Moly 1040 Gearbox Oil Additive 20 g

Liqui Moly - For gearbox, driveshaft and differentials - especially under high thermal loading Contents are enough for up to 1 litre of gearbox oil Not for motorcycles with a wet clutch.

Contains highly concentrated MoS2 to reduce wear in manual and differential transmissions, axle drives without integrated wet differential locks and mechanical steering systems. The mos2 additive builds a durable film of lubrication on a rubbing and sliding surfaces Prevents rubbing and wear and disperses temperature peaks. The transmission heats up less and benefits from smoother tooth faces in terms of quieter running and improved performance. Mos2 reduces temperature peaks and ensures quieter running and smoother shifting.
BrandLiqui Moly
ManufacturerLiqui Moly GmbH
Height15.1 cm (5.94 Inches)
Length1.8 cm (0.71 Inches)
Weight0.02 kg (0.04 Pounds)
Width2.9 cm (1.14 Inches)
Part Number1040

2. STP

STP GST60150EN Gearbox Oil Treatment 150 ml

STP - Reduces gearbox wear and corrosion. Proudly made in the UK. Reduces friction and noise. Allows a smoother gear change. Removes harmful acids and deposits in the gearbox.
ManufacturerArmor All
Height19.71 cm (7.76 Inches)
Length77.19 cm (30.39 Inches)
Weight0.15 kg (0.34 Pounds)
Width20.5 cm (8.07 Inches)
Part NumberGST60150EN


Molyslip 2001G Axel & Gear Oil Treatment

MOLYSLIP - Reduces wear of gears and transmission systems. Lowers the working temperature of the oil. Protects against corrosion. Reduces friction between moving metal to metal surfaces. Increases reliability, reduces maintenance, overhauls and expenditure on replacements.
ManufacturerMolyslip Ltd
Weight0.25 kg (0.55 Pounds)
Part NumberM510010

4. Lucas Oil

Lucas Oil 40009 Transmission Fix, 710ml

Lucas Oil - Lowers operating temperatures and stops foaming. Contains no solvents. Can be added to existing fluid without draining any out. Effective in an extremely high percentage of cases.
BrandLucas Oil
ManufacturerLucas Oil Products Inc
Height24.76 cm (9.75 Inches)
Length8.51 cm (3.35 Inches)
Weight0.72 kg (1.59 Pounds)
Width8.51 cm (3.35 Inches)
Part Number40009

5. Lucas Oil

Lucas Oil 10009 Transmission Fix

Lucas Oil - Contains no solvents. Transmission fix has polymetric film which renews worn bands to stop slipping. Lowers operating temperatures and stops foaming.
BrandLucas Oil
ManufacturerLucas Oil
Height8.51 cm (3.35 Inches)
Length30.48 cm (12 Inches)
Weight0.72 kg (1.59 Pounds)
Width8.51 cm (3.35 Inches)
Part Number10009
WarrantyNo Warranty

6. Liqui Moly

LIQUI MOLY 2591 Oil additive,300 ml

Liqui Moly - All of the friction surfaces and furniture. Item package Width: 5. 5cm. Item package Length: 5. 5cm. Item package Height: 18. 5cm.
BrandLiqui Moly
ManufacturerLIQUI MOLY
Height6 cm (2.36 Inches)
Length12 cm (4.72 Inches)
Weight0.3 kg (0.66 Pounds)
Width6 cm (2.36 Inches)
Part Number2591

7. Slick 50

80 ml, Slick 50 60199080 Manual Gearbox Treatment

Slick 50 - Formulated for manual and heavy duty manual transmissions, final drives and differentials. Suitable for use in heavy duty trucks, vans and passenger cars. Provides protection for the extreme pressure requirements of hypoid, spur, bevel, helical and worm gears. Helps protect against friction and stress of high loads by providing a PTFE treatment to the gears.
BrandSlick 50
ManufacturerSlick 50
Height21.5 cm (8.46 Inches)
Length8.1 cm (3.19 Inches)
Weight0.16 kg (0.35 Pounds)
Width5.5 cm (2.17 Inches)
Part Number60199080
Warranty12 months