Justice Brothers Engine Stop-Leak

Justice Brothers Engine Stop-Leak – ESL-44P

Seal Leaks Fast and Restore Engine Integrity

Stop engine oil leaks quickly and safely with Justice Brothers Engine Stop-Leak, available at NorCal Diesel Performance. Specially formulated to recondition old, dry, or shrunken rubber crankcase seals, this additive is trusted by professionals and vehicle owners for its proven ability to halt leaks without harming your engine or oil passages. Whether you’re dealing with annoying drips or seeking to prevent future leaks, Justice Brothers Engine Stop-Leak offers an effective, affordable solution that blends seamlessly with all types and grades of motor oil.

Key Features & Benefits

• Stops & Prevents Engine Seal Leaks: Effectively seals leaks caused by worn or dried-out rubber crankcase seals, restoring them to a flexible, leak-free condition.

• Reconditions Old Seals: Revitalizes and softens old, brittle seals, extending the life of your engine’s internal components.

• Safe for All Engines: Will not harm internal engine parts and is compatible with all types and grades of motor oil.

• No Clogging: Engineered not to clog oil passages or filters, ensuring optimal oil flow and engine protection.

• Easy to Use: Simply add one can per 4 to 6 quarts of motor oil—no special tools or downtime required. Most leaks stop within 300 miles or 5 days of normal driving.

• Trusted Performance: Praised by customers for sealing leaks in even the toughest cases, from daily drivers to heavy-duty farm equipment.

How to Use

1. Ensure the engine is off and cool. Check that the oil level is normal.

2. Add the contents of the can directly to the motor oil. Do not overfill.

3. Replace the oil cap and operate the vehicle as usual.

4. Monitor oil levels and check for leaks over the next 300 miles or 5 days. Note that old oil residue may continue to drip briefly after the leak is sealed.

5. If the leak persists after treatment, mechanical repair may be necessary.

Product Details

Justice Brothers is a leader in automotive maintenance solutions, backed by nearly 90 years of innovation and trusted by professionals worldwide. Their Engine Stop-Leak is consistently rated among the most effective and reliable products for stopping engine oil leaks—saving you time, money, and hassle.

“There are a lot of ‘stop leaks’ on the market but Justice Brothers Engine Stop Leak is simply the best I’ve ever used. I used the product on a Case H-4 farm tractor that had a leak for 15 years… the leak stopped and hasn’t reoccurred—thanks for an excellent product.”
— K.B., Minneapolis, MN

Order with Confidence

• Fast, flat-rate shipping

• 30-day returns

Seal leaks and protect your engine—order Justice Brothers Engine Stop-Leak today from NorCal Diesel Performance!