Is this safe for diesels, specifically the Duramax 6.6L?

Yes..... According to Bars Product, this is compatible with all engines and engine oils.

Can you use this with synthetic oils

Yes, I have used it with synthetic oil with no issues.

What it does with my other gasket that has not have a leak?

If I'm understanding your question correctly.... you would like to know what effect this has on gaskets that are not leaking? The answer is nothing..... Thank you Eric

Is this safe to use with other gas additives such as seafoam, lucas?

Yes there is no problem. This gets poured into your oil crankcase not into your gasoline. Seafoam usually gets poured into your gas tank to clean injectors and cylinder walls sometimes you can put it in the crankcase just about 4 oz to clean junk this does not stop any leaks usually done 100 or 200 mi before an oil change. Lucas has many products some that are injector cleaners that go into the fuel tank some that are oil stabilizers or stop leaks or friction additives that go into your oil crankcase you can have Lucas oil additive/stop leak and bars leak in your oil crankcase they don't interfere with one another

Desertcart Logo

Deliver to Paraguay

For best experience Get the App

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan
KOREA

Customer Services

About Us

Customer Support

Description

🛠️ Fix leaks like a pro—because your ride deserves the best!

BULK REPAIR READY - Six 16.9oz bottles ensure you’re always stocked for multiple rear main seal fixes
TIME COST SAVER - Avoid expensive mechanic visits by restoring seals yourself with professional-grade product
CONCENTRATED FORMULA - High-strength seal repair concentrate penetrates and rejuvenates seals effectively
TRUSTED BRAND ASSURANCE - From Bar’s Leaks, a leader in automotive seal repair solutions trusted by pros
POWER PACKED COMPATIBILITY - Works seamlessly with 12V vehicle systems for reliable performance

Bar's Leaks 1040-6PK Rear Main Seal Repair Concentrate is a professional-grade, 16.9oz formula designed to restore and rejuvenate rear main seals. Compatible with 12V vehicle systems, this pack of six bottles offers a cost-effective, reliable solution to prevent oil leaks and extend engine life, trusted by automotive experts worldwide.

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

₲1726908

Duties & taxes incl.

Paraguaystore

Free Returns

30 daysfor PRO membership users

15 dayswithout membership

Secure Transaction

ChatGPT - opens in a new tab Perplexity - opens in a new tab Claude - opens in a new tab Grok - opens in a new tab Google AI - opens in a new tab

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

View all Trustpilot reviews

Manufacturer	Bar's Leaks
Brand	Bar's Leaks
Model	1040-6PK
Product Dimensions	19.3 x 8.64 x 5.08 cm; 3.16 kg
Item model number	1040-6PK
Manufacturer Part Number	1040-6PK
Voltage	12 Volts
Item Weight	3.16 Kilograms

Bar's Leaks1040-6PK Rear Main Seal Repair Concentrate - 16.9oz (Pack of 6)

Details

Description

Specifications

Have a Question? See What Others Asked

Common Questions