Do you add it to your car, even if your oil is currently full?

You add it in substitution to oil making sure you don't overfill, right to the upper fill line is perfect & a little over is still ok.

do i need to flush this after leak is fix?

No don't flush. It will come out when you need an oil change.but it would have done its job on that leak..

who do i get a hold of for this guarentee?

You have to directly contact the manufacturer, fill out a form, with proof of purchase, and send it back to them within 60 days

will this stop oil leak on a 2005 hyundia santa fe with 3.5l engine?

I actually called the blue Devil company about a minivan with an oil leak. They said " absolutely". It did slow down the leak.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Rear Main Sealer

Product ID: 8963643

Details

Brand
BlueDevil
Item Weight
8 ounces
Item dimensions L x W x H
6 x 2.5 x 2.5
Material
Rubber
Style
Compact

🔧Universal engine compatibility

⏱️Restores seals while driving

🛠️Permanent seal technology

SAR 152

Duties & taxes included

In stock

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Description

🛡️ Seal the deal, drive with confidence—never let leaks hold you back!

DRIVE RESTORE - Revives dried, cracked seals as you drive, extending engine life effortlessly.
SEAL SAFE FORMULA - Free from harmful petroleum distillates, protecting your engine’s integrity.
ALL ENGINE FRIENDLY - Works seamlessly with gasoline or diesel, synthetic or conventional oils.
LEAK PROOF CONFIDENCE - Permanently seals rear main leaks—no more oil drips or messy repairs.
PLUG PLAY SIMPLICITY - Just pour into your engine oil—no mechanic needed, no downtime wasted.

BlueDevil Rear Main Sealer is an 8-ounce liquid formula designed to permanently repair leaks in the rear main seal of gasoline and diesel engines. It restores rubber seals while driving, is safe for all engine types and oils, and prevents oil leaks without requiring repeated applications.

Specifications

ASIN	B0079JX4JO
Best Sellers Rank	#90,546 in Automotive ( See Top 100 in Automotive ) #166 in Body Repair & Restoration Adhesives
Brand Name	BlueDevil Products
Color	Blue
Compatible Material	Metal, Plastic
Customer Reviews	4.1 4.1 out of 5 stars (3,576)
Global Trade Identification Number	00891838002348
Included Components	1 x 8 Oz. Bottle
Item Dimensions	6 x 2.5 x 2.5 inches
Item Form	Liquid
Item Highlight	DIY Permanent Automotive Leak Repair \| Restores Dried, Cracked & Shrunken Rubber Seals \| Gas or Diesel Multi-Vehicle Formula
Item Type Name	Rear Main Sealer
Item Weight	8 ounces
Manufacturer	BlueDevil Products
Material Type	Rubber
Model	00234
Number of Items	1
Number of Packs	1
Part Number	00234
Style Name	Compact
UPC	891838002348
Unit Count	8 Fluid Ounces
Warranty Description	limited
Water Resistance Level	Water Resistant

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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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

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