Purpose and Specifications

LIQUI MOLY 5199 Pro-Line Gear Oil Leak Stop is a premium 500ml additive designed to stop oil leaks in manual transmissions and differentials. It revitalizes hardened rubber and plastic seals, making them flexible again to prevent drips and environmentally harmful oil patches under your vehicle.

Key practical benefits:

• Regenerates seals to eliminate minor gear oil leaks
• Works on manual gearboxes and differentials up to 10 liters of oil
• Sealing effect starts after 600-800 km of driving
• Safe for everyday driving temperatures from -30°C to 130°C
• Shelf life of 4 years when stored properly

Add one 500ml can directly to the gear oil at any time, ideally during oil changes for lasting results. Not for automatic transmissions or wet clutches.

When to Use / Replace?

Use when you spot oil spots under the car from the gearbox or differential, or during routine maintenance every 50,000 km or 24 months. Replace the additive with fresh product at every gear oil change, typically every 60,000-100,000 km depending on your vehicle's manual.

FAQ:

Q: How soon does it stop leaks?
A: Seals begin to swell and stop leaks after about 600-800 km of normal driving.

Q: Is it safe for my manual transmission?
A: Yes, for manual gearboxes and differentials, but never use in automatics or motorcycles with wet clutches.

Q: How much gear oil can one bottle treat?
A: 500ml treats up to 10 liters of gear oil, perfect for most cars and trucks.