Bar’s Leaks Heavy Duty Rear Main Seal Repair – Rear Main & Engine Seal Fix (500 mL)

? Description

A powerful engine oil additive designed to restore and seal worn, dried, or hardened rear main seals, cam seals, timing cover seals, and other engine oil leaks. It revives seals and forms a polymeric film that fills grooves on crankshafts to stop leaks in just 2 days or 100 miles of driving  .

---

? Specifications

Volume: 500 mL (16.9 fl oz) bottle

Coverage: Treats 4–6 qt (3.8–5.7 L) of engine oil  

Compatible With: All gasoline and diesel engines (normal, high‑mileage, or synthetic oil)  

---

✅ Key Features

Heavy-duty formula seals leaks in heavily worn seals

**Dual-action technology:**

Restores seal flexibility and size

Deposits seal-enhancing polymers that fill in seal grooves  

Stops multiple leak types: rear main, cam, timing cover, O-rings, etc.  

No clogging: Safe for oil filters—contains no particles  

---

? How to Use

1. Add entire bottle directly into the engine oil (during or between oil changes), ensuring oil levels stay correct

2. Drive normally—leaks should stop within ~100 miles (160 km) or 2 days

3. For lingering issues or preventive care, reapply with every oil change (~5,000 miles)