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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BlueDevil Rear Main Sealer - 8 Ounce (00234)

BlueDevil Rear Main Sealer - 8 Ounce (00234)

Product ID: 182295101

Details

Material
Rubber
Brand
BlueDevil
Style
Compact
Item Weight
8 Ounces
Item dimensions L x W x H
15.2 x 6.4 x

🔧Compatible with all engine types

⏱️Restores seals while you drive

🛠️Permanent sealant for lasting repair

52970CFA

Duties & taxes included

In stock

Sold byAmazon Cote D' IvoireDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔵 Seal the deal, drive leak-free—BlueDevil’s got your engine covered!

DRIVE RESTORE - Revives dried, cracked seals on the go—no downtime needed.
SEAL IT FOR GOOD - Permanently stops rear main seal leaks without repeated applications.
SEAL SAFE FORMULA - Free from petroleum distillates to protect your engine’s rubber seals.
UNIVERSAL ENGINE ALLY - Works seamlessly with gasoline, diesel, synthetic, or conventional oils.
EFFORTLESS APPLICATION - Just pour into engine oil—no mechanic required, no hassle.

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 easy to use by simply adding to engine oil, and is safe for all engine types without damaging seals.

Specifications

ASIN	B0079JX4JO
Best Sellers Rank	#483,008 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #332 in Fillers, Adhesives & Sealants
Brand	BlueDevil Products
Brand Name	BlueDevil Products
Colour	Blue
Compatible Material	Rubber
Country of Publication	USA
Customer Reviews	4.1 out of 5 stars 3,332 Reviews
Global Trade Identification Number	00891838002348
Included Components	1 x 8 Oz. Bottle
Item Dimensions	15.2 x 6.4 x 6.4 Centimeters
Item Form	Liquid
Item Type Name	Rear Main Sealer
Item Weight	8 Ounces
Item dimensions L x W x H	15.2 x 6.4 x 6.4 Centimeters
Manufacturer	BlueDevil Products
Manufacturer Part Number	00234
Material	Rubber
Material Type	Rubber
Model	00234
Number of Items	1
Style	Compact
Style Name	Compact
UPC	891838002348
Unit Count	8.0 Ounce
Water Resistance Level	Waterproof

Reviews

D**E

As advertised

14.08.2022

L**W

Good product

28.06.2025

T**R

seal leak

7.04.2026

A**Y

Money wasting not work no effect

28.03.2026

G**X

Good

7.02.2026

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