Engine Stop Leak

Engine Stop Leak

Nulon Engine Stop Leak reduces annoying oil leaks in all petrol, diesel and LPG engines. Use this product if your car has any of the following symptoms: loses or leaks oil, blows blue smoke at start-up, on take-off after a period of idling at traffic lights, or when decelerating downhill.

NOTE: Can be used to control leaks in manual gearboxes and differentials.

Benefits

  • Reduces oil leaks
  • Rejuvenates hardened or shrunken seals
  • Reduces exhaust smoke at start-up or on take-off
  • Reduces oil consumption & oil burning
  • Can save the expense of seal replacement
  • Reduces leaks in all types of gearboxes & differentials

Add 1 bottle for every 5 litres of engine oil. Shake bottle and add contents to engine oil. Idle engine for at least 1 minute. Use with every oil change. To reduce gearbox and diff oil leaks, add 60 ml per litre of oil.

NOTE: It may take 14 days or 500 km to achieve maximum benefits. Excessively worn or damaged seals may not respond and will require replacement.

For advice, contact a Poisons Information Centre (Phone e.g. Australia 131 126; New Zealand 0800 764 766) or a doctor (at once).

How our customers rate this product.

Average rating of

5.0/5

1 customer review

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Most Helpful Customer Reviews

7 of 9 people found the following review helpful
5/ 5stars
Feedback: Engine Stop Leak , 18 Jan 2017 By Ross
I reverse park on a step driveway and the territory leaked oil at the back of the motor, before I used NULON engine stop leak and it stopped the leak immediately.
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7 of 9 people found this helpful

FAQs

Frequently Asked Questions

My engine is using a lot of oil, should I run a thicker oil to reduce this consumption?

4 years ago

Running a very thick oil can sometimes cause issues in modern engines. An area that is often overlooked when oil comsumption is a problem is hardened valve stem seals. Oil will bypass hardened seals and allow oil into the combustion chamber via the valve stems. Consumption as high as one litre per thousand kms can be caused by valve stem seal leakage. Nulon Engine Stop Leak can rejuvenate hardened valve stem seals and should be used before moving to a thicker engine oil.

19 of 20 people found this helpful
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Does Nulon have an engine treatment to stop oil leaking from my engine ?

4 years ago

Yes, Nulon engine treatments (Worn Engine Repair,Modern Engine Treatment ,Pro-Strength Extreme Performance Engine Treatment,Passenger Car Diesel Engine Treatment, Pro-Strength Heavy Duty Diesel Engine Treatment etc) will reduce cylinder blowby and reduce crankcase pressures. Engine Stop Leak will also rejuvinate hardened oil seals

16 of 19 people found this helpful
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My car is leaking engine oil. What can I do?

4 years ago

Nulon Engine Stop Leak is an additive that can rejuvenate elastomer type engine seals that have hardened or shrunk. "rear main" and "timing cover" seals are typical areas for external oil leaks.

5 of 6 people found this helpful
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My car blows smoke in the morning, what product should I use?

4 years ago

White exhaust smoke on morning start-up is generally caused by leaking valve stem seals. Engine Stop Leak would be the best product to use to reduce this smoke.

4 of 6 people found this helpful
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Related Questions

Do I add Nulon Engine Treatments to my old engine oil or new engine oil

4 years ago

Nulon ani-wear Engine Treatments based on PTFE can be added to engine oil at any time but are best added to new engine oil after an oil change. Please follow directions of use for the Nulon Engine Treatment products to ensure your engine receivesthe best possible protection from wear and friction.

28 of 29 people found this helpful
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Do engine treatments extend the life of my oil?

4 years ago

No, oil changes should still occur at the intervals set by the vehicle manufacturer.

27 of 28 people found this helpful
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If I use two bottles will it work faster or give a better result ?

4 years ago

No, all engine treatment products should only be used as per dosage recommendations as per directions. We would also recommend to not use more than one additive in an engine at one time.

24 of 25 people found this helpful
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Do engine treatments affect synthetic oils ?

4 years ago

No, all Nulon engine treatments are compatable with synthetic and mineral oils

37 of 41 people found this helpful
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Can I add more than one Nulon product to my engine?

4 years ago

It is recommended to only use one Nulon engine product at each oil change.

13 of 13 people found this helpful
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What if I accidently place a fuel treatment in my engine oil?

4 years ago

It will dilute the engine oil, effecting its viscosity and ability to protect vital components. We recommend replacing engine oil and filter before driving.

19 of 21 people found this helpful
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How often should I use Nulon engine treatments ?

4 years ago

Worn Engine Repair,Modern Engine Treatment and Passenger Car Diesel Engine Treatment are recommended at each oil change. For extra protection use Pro-Strength Extreme Performance Engine Treatment (petrol) and Pro-Strength Heavy Duty Diesel Engine Treatment (diesel)

28 of 33 people found this helpful
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What Nulon engine treatment suits my vehicle ?

4 years ago

This depends to the fuel type (petrol or diesel) and also the age and mileage on the vehicle. Worn Engine Repair for high mileage engines with some wear, Modern Engine Treatment for engines in good condition, Pro-Strength Extreme Performance Engine Treatment as a long term treatment. Small capacity diesel engines should use Passenger Car Diesel Engine Treatment, while for larger diesel engines use Pro-Strength Heavy Duty Diesel Engine Treatment.

14 of 20 people found this helpful
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