If your steering rack is losing oil or the steering system shows signs of oil moisture, the cause is usually aged or hardened seals. Due to pressure and constant movement, these seals lose their sealing performance over time. With LecWec, you can restore the sealing function directly during operation without removing the steering rack.
✓Oil Stop Leak for Steering Racks
✓Fast and reliable sealing performance
✓Oil sealant without chlorine
✓No dismantling or disassembly required
Inside the steering rack, polymer seals at pistons, valves, and shafts keep the hydraulic fluid contained within the system. Due to pressure, temperature, and continuous stress, these seals gradually lose their elasticity. The result: fluid leaks at sealing points or the steering system loses pressure. This is exactly where LecWec takes effect during normal operation.
After being added, LecWec circulates through the power steering fluid and reaches all sealing points within the system. The active formula is absorbed by the seals and helps restore the material to a flexible, smooth, and tightly sealing condition. This allows fine gaps between the seal and metal surface to close again.
In practical use, this means that oil loss at the steering rack is significantly reduced or completely stopped. LecWec restores the sealing performance of the existing components and enables reliable operation without removal.
"I have to report positively that the level matches the oil... unbelievable. [...] I wouldn’t have believed that the steering gearbox would be sealed again after just under a week."
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"...nothing was leaking anymore!!!
I am truly very satisfied. At first, I did not believe the product would work, but now I am completely convinced and also saved many hundreds of euros!"
- JĂĽrgen R.
Oil leak at the cylinder base gasket
Verified review (Learn more)"I did not believe it at first, but your product is excellent! [...] I ordered just one can and everything is sealed already, even though you recommend 2 cans, meaning 200 ml, for 6 liters of oil. Many thanks!"
- Andreas F.
Oil leak problems at the oil flange gasket
Verified review (Learn more)"...which made it even more satisfying when, after around 3 weeks, I noticed that the oil loss had gone down to zero – the steering rack was sealed again!! Even now, after 4 months, the reservoir is still at the maximum level."
- Friedger F.
Oil leak at the steering rack
Verified review (Learn more)"There was always a small puddle of oil collecting underneath the vehicle. I added 100 ml of LecWec to around 4 liters of oil. Since then, I have driven many miles and was surprised to find that there was no more oil on the ground at all."
- Paul R.
Leak at the oil pan
Verified review (Learn more)If your classic Porsche is leaking oil, this is usually noticeable through an oil film on the engine housing, oil drops underneath the vehicle, or typical leaks at shaft seals. In many cases, aged shaft seals or O-rings are the cause. Instead of opening the engine immediately, you can address the issue directly within the system.
Step 1: Check the oil level and roughly identify the leak location (for example crankshaft or auxiliary components).
Step 2: Add LecWec directly to the engine oil at a ratio of 3% of the total oil volume.
Step 3: Drive the vehicle normally – the additive will circulate throughout the entire oil system and reach the sealing points.
The polymer seals absorb the active formula, become flexible again, and fit tightly against the running surfaces once more. This reduces or stops oil leaks at typical weak points. You avoid interfering with the engine and preserve the original condition of your Porsche.
Identify the exact leak location
Clean the steering rack thoroughly and turn the steering wheel while stationary. This helps determine whether the oil is leaking from boots, seals, or hydraulic lines.
Check the power steering fluid level
A fluid level that is too low can affect steering performance. Keep the level within the specified range.
Inspect boots and sealing points directly
Leaks often occur at shaft seals or damaged rubber boots. Inspect these areas carefully and thoroughly.
Restore seals directly
Steering racks use polymer seals that harden over time. Through targeted treatment within the system, the sealing performance can be restored.
Use LecWec correctly and monitor the results
Add LecWec to the system at a ratio of 3% of the total oil volume and turn the steering wheel several times. Afterwards, check the sealing performance. In many cases, the oil leak is significantly reduced or completely stopped.