skip to main content

Gearbox Oil: The Essentials

An often overlooked yet essential part of an engine, transmission or gearbox oil has an important role to play in the smooth running of a vehicle. Gearbox oil has a number of uses including;

  • Ensuring easy and smooth gear changes.
  • Prevent channeling of gears.
  • Provide adequate lubrication
  • Resistance to oxidisation
  • Anti-wear and anti-corrosion properties

As manual transmissions become complex there is an increasing need for more technologically advanced oils to ensure the correct protection of the gearbox’s components. Transmission oil has a higher viscosity than engine oil and using the right viscosity is essential because there is no pump to push the oil around the gearbox - only the lower gears are actually submerged in the lubricant.

Many experts differ in their opinions on how often gearbox oil should be changed; some argue that it should be changed after every 50,000 miles, some after every 100,000 miles, and some argue that in newer cars the gearbox oil should last the life of the engine.

Fully functioning gearbox oil should be slightly red in colour and not emit a smell of burning when the gearbox is in use. If you notice that there is a grinding noise from your clutch, or your car seems to be slipping gears regularly then these are signs of faulty gearbox oil and you should perform checks as soon as possible.

We supply a range of manual and automatic gearbox oils manufactured by Q8 Oils for guaranteed quality and performance.

Shop online