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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🛠️ Seal the deal on engine health—drive worry-free!

DRIVE REPAIR - Restores dried and cracked seals while you keep moving.
MADE IN THE USA - Quality you can trust, crafted domestically.
SEAL SAFE FORMULA - No petroleum distillates—protects your engine’s integrity.
ENGINE VERSATILITY - Works seamlessly with gasoline, diesel, synthetic, or conventional oils.
EFFORTLESS APPLICATION - Just pour into your engine oil—no mechanic needed.

BlueDevil Rear Main Sealer is an 8-ounce engine additive designed to restore dried, cracked, and shrunken rear main seals while you drive. Safe for all engine types and oils, it features a petroleum distillate-free formula that protects seals and extends engine life. Easy to use and made in the USA, it’s the go-to solution for proactive vehicle maintenance.

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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.

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€ 41.21

Duties & taxes incl.

Slovakiastore

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

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

5 days ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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Material	Rubber
Brand	BlueDevil Products
Style	Compact
Item Weight	8 Ounces
Item dimensions L x W x H	6 x 2.5 x 2.5 inches
Compatible Material	Plastic, Metal
Water Resistance Level	Waterproof
Item Form	Liquid
UPC	891838002348
Global Trade Identification Number	00891838002348
Color	Blue
Manufacturer	BlueDevil Products
Model	00234
Item Weight	8 ounces
Product Dimensions	6 x 2.5 x 2.5 inches
Country of Origin	USA
Item model number	00234
Is Discontinued By Manufacturer	No
Manufacturer Part Number	00234

BlueDevil ProductsRear Main Sealer - 8 Ounce (00234)

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