10278 Engine Stop Leak, 946 ml

This works really well on older cars where you may have a small oil drip here and there. Also quietens the engine. A good proven product

Did exactly what it said it would, cured an oil leak on a combine.

After 300k miles, the car has a suspect oil leak (probably the turbo bearing seals) and to make matters worse, on a recent oil change I put in a slightly thinner grade of oil than I should. Used various Lucas products in the past (the fuel saver is really good, as is the oil stabiliser) and decided to get a bottle of stop leak and add a little to thicken the oil. Slight engine rattle disappeared immediately. If there is a persistent slight oil leak, given my experience with other lucas products - I have the utmost confidence that it will slow it down as I add more when and if there's room to.

I had a major leak, added 1 liter to 3 liter oil , It changes the sound of engine it is smoother now, I am really surprised.It didnt help with the leak though. I don't know what could be the long term consequences but for the beginning I am happywith it.

This stuff looks like Golden syrup or honey mixed with a glue but obviously it is not this. it is proper oil and mineral based product just very viscous. Followed the instructions and so far I am pleasantly surprised. The annoying leak has stopped, need to put some serious hot driving in and see if I still leave a small puddle in the works carpark. My advice to make use easier - it is better if the outside temp is not close to freezing, the colder the temp the thicker the unmixed product the harder to pour. Update after 600 miles, has reduced the leak but not by much, obviously it cannot work for all leaks.

Good quality mega thick stuff from Lucas , You get what you pay for and this stuff is something I always use.

I used the product like duz on the packaging and it didn't work, I even increased the dosage and no solution!!! The engine gasket kept leaking as well as money out of my pocket for spending on this product! 😡 Disappointing

Excellent product stopped my classic car engine dripping oil

يجب استعماله على فترات متفرفه مثل كل ثلاث ايام 250مل ولمدلاتقل عن اسبوعين مع عند إضافة زيت المحرك 1لتر نص اذا كان ناقص . وعند استبدال زيت المحرك يضاف 1 او 1.5لتحصل على أفضل نتيجة.

Mix in juiste ratio

I have a 2016 international prostar with a cummings engine ixs. It had a front engine seal leak. I added this at my last oil change. It took about two weeks and it stopped leaking oil. Yes I was surprised because I added only one gallon, not to mention that I really didn't think it would work. My leak was so bad it was oil was blowing on my right steer brake, this has save me some time.I have 960000 miles on my engine, trying to hold out until a rebuild .

I own an old car and this oil stopped my leaking. Amazing

j avais une grosse fuite au joint spy vilbrequin de ma peugeot 307 de 2004 . j ai vider l huile moteur et j ai mis le bidond entier et j ai fait l appoint d huile pour etre sur ! j ai plus eu de fuite depuis 2 semaines ! a voir dans le temps