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🛡️ Seal the deal on engine leaks before they seal your fate!
Bar's Products OS-1-4PK Oil Seal is a universal, 16.9 oz engine oil leak and burning repair formula trusted for over 75 years. Designed for gasoline and diesel engines—including turbocharged, hybrid, and racing models—it renews worn valve seals, stops oil burning, and seals leaks across a wide range of vehicles and equipment, preventing costly repairs and blue exhaust smoke.
| Asin | B0764H6K45 |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | 15,349 in Automotive (See Top 100 in Automotive) 239 in Car Engine Oils |
| Brand Name | Bar's Leaks |
| Compatible With Vehicle Type | Motorcycle |
| Container Type | Bottle |
| Customer Reviews | 4.1 4.1 out of 5 stars (3,646) 4.1 out of 5 stars |
| Global Trade Identification Number | 00046087010358 |
| Included Components | 16.9 oz Oil Seal |
| Item Highlight | Repairs Leaking Main Seals and Gaskets, Renews Worn Valve Seals and Guides, Stops Oil Burning & Blue Exhaust Smoke |
| Item Type Name | Oil Seal (Engine Oil Burning/Leak Repair) |
| Item Weight | 1.1 Pounds |
| Liquid Volume | 16.9 Fluid Ounces |
| Manufacturer | Bar's Products |
| Manufacturer Part Number | OS-1 |
| Model Number | OS-1 |
| Number Of Packs | 1 |
| Size | Pack of 1 |
| Unit Count | 16.9 millilitre |
| Upc | 046087010358 |
User
WORKS
This stuff stopped the annoying little drip from my Landy disco 4 . So far saving thousands of pounds. if only in estimates.
User
Don't be sceptical!
I put the SO-1 into my engine and turned on the engine sat there for 20mins then drove for 20miles got home and checked my dip stick still where it was when I started my drive, now a few days before I had changed my oil, the next day I replaced my front brake pads I noticed my lower wishbone was very shiny it was soaked in oil, now it isn't, so SO-1 must have worked caramba! Happy me, and no I did not think it would work and now think £22.00 was money well spent, well done Bars Leaks!
User
It's expensive and I don't know how long it lasts
Takes a while to work but otherwise good
User
Does the job
Easy to use and does what it says
User
Waste of money
Don’t waste your money on this ,it simply does not work after 300 miles using it , the leak is just the same
User
Not good
It never worked in my car engine
User
Easy to use, very good product. It works.
Does the job if you have a leak always go to a garage but this product may just tie you over. I'm no mechanic but I tried this on my own vehicle and it worked is all I can say. Leaking stopped on my vehicle when used correctly I was very happy.
User
Bar's Oil
Great product. Those what it says on the bottle
User
Fast Shipping and great product
I've bought a lot of products before but they didnt totally stop the leakage as what this product did.
User
Funciona!!!
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... 😜
User
This seals valve stems!
This actually works! I put it in my John Deere tractor and it completely got rid of the blue smoke on a cold startup!
User
Works
Works
User
Product is great
terrific, worked wonders
Trustpilot
2 months ago
5 days ago