OS-1-4PK Oil Seal Engine Oil Burning/Leak Repair, 16.9 oz, (Pack of 4)

Works. Had a small leak and i flushed the engine, changed the oil adding the stop leak with the new oil. Ran the engine as instructed to, no leaks and its been over a month. Was recommended to me, and it was worth it.

Used this product in a 2012 Civic that was burning a quart almost every 500 miles. This almost put a complete stop to that. I had to combine it with another product in order to stop the oil burning almost completely, but this did decrease the amount of oil burning by at least 40%. Keep in mind this will not fix a broken engine. My civic has a defect from the factory that causes oil blow by - the only true fix is to get new piston rings installed. This wont fix anything - but it will help with oil burning.

As my car get near 15 years old and still a daily driver had started to experience many leaks. The BMW community says not to use the product in your BMW. I have a BMW 323i and with the age and mileage was looking at putting a couple thousand into repairs so gave this a shot. Multiple leaks were resolved while one weeper persists. Have ran for over a month with minimal oil loss and improved performance. I did end up flushing out the system after running it with this product in it for the month.

The product worked on a 2012 Bmw 750Li that was smoking when at a light, in traffic, or in line at fast food..... Was fine when diving as long as not at a stand still for over 3 to 5 Mins or stop and go traffic..... I fell like it was the valve seals leaking ao I brought this in hopes it would work.... The initial one I was going to try seems to stay sold out..... I decided to purchase before a trip that was 200 miles away to give it a chance to work..... I put it in the night before for 15 to 20 mins 1st and as always it started smoking...... On the trip back 2 days later before making it home we stopped at Zaxby's and about 6 cars were in line.... I say oh boy because it always smokes after a few mins in line soni have to cut the engine off and turn back on after a car move up..... But this time for the 1st time it did not smoke.... I was amazed and kept looking for the smoke but never came..... So the product works.... Dont know if it already worked on the first 200 mile because i did not test until i retured so I drove over 400 miles before i test it.... But no smoke at all...... Probably will cost over 5k to change all the valve seals if not more.

I don't know why I keep wasting my money on these additives that don't work. There is no miracle repair.

It works very well, highly recommended.

I have been working on cars over forty years, and these products typically do not work, and this one is on that list. Now looking at the comments, many gave it great reviews, and so I decided to try it, needless to say it was a big flop. If you have a few bucks to through away and you are desperate go for it but have a backup plan. Yes, rear and front seals are challenging, depending on the manufacture, but realize what you have and attack the problem where it lies, that is replace the worn seal, stop looking for magic in a can. This is not it. I would have given it a half star, but the system does not allow.

Had a small oil leak that created a burning smell. After adding oil seal during a regular oil change the burning oil smell went away. It came back months later and added more that stopped the burning oil smell again, so it seems to have worked twice. Remember to not overfill your regular oil by replacing this product in place of a 1/2 quart of regular oil.

I've bought a lot of products before but they didnt totally stop the leakage as what this product did.

Great product. Those what it says on the bottle

Magnífico. Tengo una de mis motos con casi ya 40 años y algunas fugas de aceite motor severas. No era una gotita, era ya casi pequeños charcos. Decidí probar este mejunje y el resultado es de 10. Han desaparecido por completo. No hay fugas ni gotas ni nada de aceite ya bajo la moto. Cuesta creer en estos productos milagrosos, de hecho no creía en ninguno pero como tenía mucha pereza y poca pasta para levantar el motot y gastar más de 200€ en juntas decidí probar por las reseñas positivas que leí a ver que tal en mi moto y si! Funciona 🙂 Apto para motores con embrague en baño de aceite o sea que lo puedes poner en tu moto sin problema... 😜

Works

Resultados muy buenos, lo recomiendo