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IHC Tractor Engine Leaking Oil
Fix Typical Causes Effectively


With IHC tractors, oil-moist engine blocks, oil drops underneath the tractor, or oil-contaminated attachments are a well-known issue. Typical causes include crankshaft seals, valve cover gaskets, oil pan gaskets, or pushrod tubes. In particular, shaft seals and rubber gaskets lose their elasticity over the years due to heat and operating hours and no longer provide a proper seal.

With LecWec, you can restore the functionality of these seals directly during operation without opening the engine or carrying out extensive disassembly work.

✓Oil Stop Leak for typical IHC engine issues
✓Targets shaft seals and O-rings specifically
✓Oil sealant without chlorine
✓Seal the engine without disassembly


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Lecwec Flasche 100ml final Pfade

How LecWec Works in IHC Tractor Engines

Depending on the engine series, IHC engines use shaft seals, O-rings, as well as paper and flat gaskets. Polymer-based seals at the crankshaft, camshaft, and auxiliary components in particular lose their plasticizers over time due to aging and thermal stress. They become hard, shrink, and lose their sealing performance. This is exactly where LecWec takes effect during normal operation.

After being added, LecWec circulates through the engine oil and reaches all relevant sealing points within the system. The active formula is absorbed by the polymer seals and helps restore their original properties. The material becomes flexible again and fits tightly against the running surfaces. This closes the typical leakage gaps found at shaft seals and sealing lips.

In practical use, this means that oil loss is significantly reduced or stopped, provided the cause is aged seals. LecWec does not work directly on paper or metal gaskets, but it can restore the sealing performance of the overall system when the main leakage originates from polymer sealing points.


Only 3% of the total oil quantity.

LecWec is chlorine-free.

For all oil systems and types.

Direct delivery from the manufacturer.
LecWec Erfahrung im Video

It happened even faster than I expected.

"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!"
- Jürgen 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)
3 Flaschen LecWec final Pfade

How to Seal an IHC Tractor Engine in 3 Steps

If your IHC engine is leaking oil, this is usually noticeable through an oil film on the engine block, oil drops underneath the tractor, or typical leak points at shafts and housings. In many cases, aged shaft seals or valve cover gaskets are the cause. Instead of dismantling the engine immediately, you can address the issue directly within the system.

Step 1: Check the oil level and identify typical leak points (for example crankshaft, oil pan gasket, or valve cover).
Step 2: Add LecWec directly to the engine oil at a ratio of 3% of the total oil volume.
Step 3: Operate the tractor normally – the additive will circulate throughout the entire oil system.

The polymer seals absorb the active formula, become flexible again, and fit tightly against the sealing surfaces once more. This reduces or stops oil leaks at typical IHC weak points. You avoid unnecessary disassembly and keep the engine operational and properly sealed.

IHC Tractor Leaking Oil? These 5 Tips Help

Know the typical IHC leak points
Crankshaft seals, valve cover gaskets, oil pan gaskets, and auxiliary components are among the most common causes. Clean the engine thoroughly and inspect it carefully.

Check the crankcase ventilation
Restricted crankcase ventilation increases pressure inside the engine and can worsen oil leaks. Inspect the system condition.

Inspect sealing surfaces and bolt connections
Loose bolts or uneven sealing surfaces can quickly lead to oil leaks. Check these areas first.

Restore seals in a targeted way
Many IHC engines use shaft seals and rubber seals that harden over time. This is exactly where LecWec can restore sealing performance.

Use LecWec correctly and monitor the results
Dose LecWec at 3% of the oil volume and operate the tractor normally. Monitor the known leak points afterward. In many cases, oil leakage is significantly reduced or completely stopped.

Questions and Answers about LecWec

How does LecWec work?
Replacing a leaking oil seal is usually not a cheap repair. If an entire component has to be replaced, costs become even higher. Since 1995, LecWec has provided a permanent solution for polymer oil seals – without disassembly or replacement, and without high labor or repair costs. LecWec is suitable not only for vehicles, but for all oil systems and nearly all oil types. Over time, polymer oil seals lose their plasticizers, become brittle, and shrink. LecWec impregnates the seal and replaces the lost plasticizers. The seal becomes flexible again and slightly expands – just enough to compensate for wear on the sealing lip.
3How much LecWec do I need for my IHC tractor?
The required amount depends on the engine oil capacity. The dosage is exactly 3% of the total oil volume. An IHC engine with 8 liters of engine oil requires 240 ml of LecWec. The additive is poured directly into the engine and distributes itself throughout the entire oil circuit during operation. This allows LecWec to reach internal shaft seals and elastic seals as well.
How long does LecWec take to work?
LecWec requires a certain amount of operating time to take effect. After adding it, the tractor should be operated so the product can circulate throughout the system. Depending on the condition of the seals, it may take several operating hours to several days before a noticeable improvement appears.
How long does the effect of LecWec last?
The effect of LecWec is designed for long-term sealing performance. Once fully active, the sealing effect usually remains stable for years, provided the seals are still structurally intact.
3How reliably does LecWec stop oil leaks?
LecWec works reliably on oil leaks caused by aged or hardened sealing lips. A particularly noticeable improvement is often seen with crankshaft seals and shaft seals.
3When does LecWec not work?
The effect is limited on classic flat gaskets such as oil pan or valve cover gaskets. Mechanical wear or damaged sealing surfaces also require mechanical repair.
3Do I need to disassemble the IHC engine to use LecWec?
No. LecWec is added directly to the engine oil and works during normal operation. Disassembling the engine is not necessary as long as the oil leak is caused by aged sealing lips or shaft seals.
5Does LecWec also help with older IHC engines?
Yes. Especially in older IHC engines, shaft seals and elastic seals often become hardened or shrink over time. LecWec restores the elasticity of these seals and can significantly reduce typical oil leaks around the crankshaft or auxiliary components. Its effect on classic flat gaskets is limited.
6Can LecWec help with crankshaft seals?
Yes. LecWec can help with leaking crankshaft seals if the cause is hardened sealing lips. If shafts are worn, sealing surfaces are damaged, or leaks occur at the oil pan or housing joints, the effect is limited and mechanical repair is necessary.
6Can LecWec also be used preventively?
Yes. LecWec can also be used preventively to keep seals flexible over the long term. Especially on tractors with many operating hours or long periods of downtime, it helps prevent seals from drying out and becoming brittle. For preventive use, a reduced dosage of 1.5% of the oil volume is recommended. This keeps the seals elastic and significantly reduces the risk of future leaks.
Can LecWec damage the engine or transmission?
No. LecWec is designed to fully blend with the existing oil without affecting lubrication performance. It does not attack metal parts and does not alter tolerances within the system. Bearings, gears, and other components remain unaffected. LecWec works exclusively on the seals within the system. When used correctly at a dosage of 3% of the oil volume, LecWec has no negative effect on the function of the engine, transmission, or hydraulics.
8How much does LecWec cost and where can I buy it?
You can buy LecWec directly online in our shop. There you will also find all prices. Alternatively, you can send us a message below and we will gladly help you with your question or order.

+49 89 - 90 35 638


Monday - Friday
9:00 AM - 5:00 PM


order@lecwec.de

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