



🛠️ Seal the deal on leaks before they seal your fate!
Bar's Leaks OS-1 is a premium synthetic blend engine oil additive designed to repair leaking main seals and gaskets, renew worn valve seals, and stop oil burning and blue exhaust smoke. Compatible with all gasoline and diesel engines—including turbocharged, EcoBoost, hybrid, and racing engines—this USA-made formula works with all motor oils and supports a wide range of vehicles from cars to heavy-duty equipment.








| ASIN | B0764H6K45 |
| Best Sellers Rank | #11,982 in Automotive ( See Top 100 in Automotive ) #23 in Motorcycle Chemicals & Fluids #214 in Automotive Oils |
| Brand | Bar's Leaks |
| Customer Reviews | 4.2 4.2 out of 5 stars (3,596) |
| Date First Available | 1 December 2017 |
| Item Weight | 499 g |
| Item model number | OS-1 |
| Manufacturer | Bar's Products |
| Manufacturer Part Number | OS-1 |
| Model | Oil Seal |
| Product Dimensions | 25.4 x 27.94 x 10.16 cm; 498.95 g |
| Viscosity | 15W 40 |
A**I
Works
Works
E**L
Work
Perfect product
T**N
it really worked on my 2007 bmw 740 in dubai
my car smoked a lot on high throttle and when the traffic was busy or parked for 5 to 10 minutes, the exhaust always smoked and smelled I spent a lot of money on some additives, and got advice from the garage for the repair very high repair cost to replace valve seals, I also ordered many kinds of pcv valve to replace but no success i have tried this product and it worked, it's not 100% but it's also 70%, my car has reduced smoke, and has reduced odor, i think it will work by adding it every time oil
A**I
انصح استخدام هذا المنتج ممتاز
A**.
لا استطيع التقييم لأن العطل عندي كان أكبر من ان بحل بهكذا مواد وضعته في ماكينة السيارة ولا اعرف ان كان جيد او لا لأني ذهبت إلى اصلاح تسرب الزيت نظرا لكثرته فلم يظهر لي جودة المنتج من عدمه
R**L
Not as claimed
I purchased it based on what was printed on the product where it seems like it perfectly suited my vehicle because it was burning just a bit of oil over a period of time. Had no change in oil consumption&exhaust smoke. I just went ahead and rebuilt my engine instead.
S**H
VERY GOOD
VERY GOOD
W**N
Still burning oil; Still had to put .5L of synthetic oil after 2 weeks.
At first, it gave a more sensitive acceleration response but apparently still burns oil.
A**H
I've bought a lot of products before but they didnt totally stop the leakage as what this product did.
A**C
Great product. Those what it says on the bottle
J**G
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... 😜
J**.
Resultados muy buenos, lo recomiendo
D**N
Good product worked well
Trustpilot
4 days ago
1 month ago