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🛢️ Seal the deal on leaks before your ride tells the story!
Bar's Products OS-1-4PK Oil Seal is a powerful, universal engine oil leak and burning repair solution designed for a wide range of gasoline and diesel engines, including turbocharged and hybrid models. It stops oil consumption up to one quart per day, eliminates blue exhaust smoke, and renews worn seals and gaskets. Suitable for cars, trucks, motorcycles, boats, and heavy-duty equipment, this USA-made formula is easy to use and trusted by thousands of satisfied customers.








| ASIN | B0764H6K45 |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | 24,677 in Automotive ( See Top 100 in Automotive ) 354 in Car Engine Oils |
| Brand | Bar's Leaks |
| Brand Name | Bar's Leaks |
| Compatible with Vehicle Type | Motorcycle |
| Container Type | Bottle |
| Country Of Origin | USA |
| Customer Reviews | 4.1 out of 5 stars 3,591 Reviews |
| Global Trade Identification Number | 00046087010358 |
| Included Components | 16.9 oz Oil Seal |
| Item Type Name | Oil Seal (Engine Oil Burning/Leak Repair) |
| Item Weight | 1.1 Pounds |
| Liquid Volume | 16.9 Fluid Ounces |
| Liquid volume | 16.9 Fluid Ounces |
| Manufacturer | Bar's Products |
| Manufacturer Part Number | OS-1 |
| Model Number | OS-1 |
| Package information | Bottle |
| Size | Pack of 1 |
| UPC | 046087010358 |
| Unit Count | 16.9 millilitre |
| Vehicle service type | Motorcycle |
P**Y
Does the job
Easy to use and does what it says
A**D
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!
M**S
It's expensive and I don't know how long it lasts
Takes a while to work but otherwise good
A**C
Bar's Oil
Great product. Those what it says on the bottle
M**E
Not impressed
Didn’t stop any mina leaks
C**E
Not number one
Would. Or recommend or use has not worked would even say it made my oil leak more
K**E
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.
S**E
Works well
Good quick delivery,works well.
M**E
Worked great
Worked as expected to slow and plug a leak in our gasket
A**H
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.
J**G
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... 😜
T**E
Worked quickly!!
Love this product. My 2016 Toyota Camry was burning oil. I found this on Amazon and figured I’d give it a try. To my surprise this resolved my issue! I just ordered a second bottle so I can keep up with the once a year recommendation.
A**I
Works
Works
Trustpilot
3 weeks ago
4 days ago