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XADO Transmission Oil Additive Review: Can It Restore Noisy Manual Gearboxes?

XADO EX120 Transmission Oil Additive (8ml) for Manual Transmission, Differentials & Transfer Cases. Reduces Noise, Wear & Vibration, Protects & Repairs
4.6
[Regenerates Worn Surfaces]  Protects and regenerates manual transmissions, transfer gears and differentials for restored performance.
[High Active Formula]  20% more active ingredient reduces wear, noise and vibration for optimized load handling.
[Metal-Ceramic Coating]  Forms durable metal-ceramic layer on gears, bearings and shafts for long-lasting protection.
[Includes Application Syringe]  8 ml syringe included for precise dosing and easy application.
[Quick Visible Results]  Noticeable improvement after a few kilometres with smoother shifting, lower costs and longer life.
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XADO Transmission Oil Additive is a transmission oil additive for manual gearboxes, differentials and transfer cases that promises to reduce noise, wear and vibration. Drivers should notice smoother, more confident gear changes and reduced rattling on daily runs. Is this the right maintenance step for a gearbox showing notchy shifts?

⚡ At a Glance
  • Repair Action: Reduces noise and wear in manual transmission components
  • Best for: Drivers with manual transmissions, differentials or transfer cases seeking smoother shifts
  • Not ideal for: Automatic transmissions or systems that require manufacturer-specific additives

Highly concentrated additive aimed at restoring gear comfort and reducing vibration. Noticeable improvement in shifting and driving comfort after just a few kilometres.


Smoother shifting - with metal-ceramic surface formation

Highly concentrated active ingredients interact with contact surfaces to form a metal-ceramic coating on gears, bearings and shafts. The coating is built up through normal operation, adapting to the surfaces.

Smoother, more precise gear changes become apparent after only a short run, helping to reduce notchy or hesitant shifts and improving everyday drivability.

Reduced noise and vibration - thanks to increased active ingredient concentration

Formula contains 20% more active ingredient compared with previous mixes, designed to reduce wear and optimise load distribution across gear contacts. That reduction in wear helps lower mechanical noise and vibration.

Quieter gearbox operation during acceleration and shifting improves cabin comfort, particularly on older transmissions showing whining or rattling under load.

Simple dosing for a range of systems - with compact 8 ml syringe

Supplied in an 8 ml syringe for accurate dosing, suitable for oil volumes from 1 to 8 litres. The syringe format allows targeted addition during servicing or topping up.

Practical for home mechanics and workshops alike, offering easy, mess-minimised application for compatible manual gearboxes and transfer cases.

✨ The 4 Key Reasons for XADO Transmission Oil Additive
  1. High concentration - Higher active ingredient content for more effective long-term protection
  2. Quick results - Effect visible after just a few kilometres of normal driving
  3. Broad compatibility - Works with manual gearboxes, differentials and transfer cases
  4. Precise dosing - 8 ml syringe enables simple, mess-free application in workshops
📋 Technical Details at a Glance
  • Category: Automotive Parts and Accessories
  • Brand: XADO
  • Type: Transmission Oil Additive
  • Application: Manual transmissions, differentials and transfer cases
  • Dose: 8 ml syringe included
❓ Frequently Asked Questions

Q: Is this safe for automatic transmissions?

A: No, the additive is specified for manual transmissions, transfer gears and differentials, so automatic transmissions are not the intended application.

Q: What oil volumes is the additive suitable for?

A: Suitable for gearboxes with oil volumes from 1 to 8 litres, delivered in an 8 ml syringe for dosing.

Q: How quickly will I see a difference after adding it?

A: Improvements in shifting smoothness and noise reduction are reported as noticeable after only a few kilometres of driving.

🏆 Our Verdict

Owners of vehicles with manual gearboxes, differentials or transfer cases who want quieter, smoother shifting will find this additive relevant. The concentrated formula that promotes a metal-ceramic surface and reduces vibration is the key selling point. As a straightforward maintenance measure, it can help extend transmission life and reduce discomfort from noisy or notchy gears over time.