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BlueDevil Head Gasket Sealer
Rear Main Seal Leak
BlueDevil Radiator Flush
BlueDevil Pour-N-Go Head Gasket Sealer
Rear Main Sealer: Part #00234
Red Angel A/C Stop Leak
BlueDevil Rear Main Sealer permanently stops rear main seal leaks. Just add to the engine oil to restore and seal gaskets. BlueDevil Rear Main Sealer is a great repair for timing cover leaks.

  • Guaranteed Permanent Seal

  • Restores Dried, Cracked, and Shrunken Rubber Seals

  • Works in Gas or Diesel Engines

Red Angel One Shot A/C Stop Leak

$14.95 / Part #00234
Rear Main Sealer
BlueDevil Oil Stop Leak
BlueDevil Transmission Sealer
BlueDevil Hydraulic Stop Leak
BlueDevil Power Steering Stop Leak
How large of a leak does it repair?

BlueDevil will seal leaks in any fluid systems that are seeping or dripping.

How much do I use?

Use 1-8oz. bottle to treat leaks up to 8 quarts capacity.

How long does the repair take?

Start engine and drive vehicle or equipment to let BlueDevil circulate. The repair is sealed while you drive (up to 2 days drive time).

Do I have to change my oil after I apply BlueDevil?

NO. BlueDevil mixes with the oil and can stay in the system.

How long will the repair last?

BlueDevil is a permanent repair!

More FAQ's...
BlueDevil Rear Main Sealer
BlueDevil Windshield Washer Concentrate
Red Angel Oil Injector
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MSDS
I just want to take a minute of your time and thank you guys for making a great Rear Main Sealer, Thanks to Mr. Jose Barrios I was able to STOP the leak on my Rear Main Seal! Keep On making it, and we keep buying it !

"I saved my customer over $750 on his rear main seal leak with the BlueDevil and have only seen him twice for his annual oil changes, the truck is running great!" Harry - Flint, MI

"My rear main seal was leaking slowly and I could not afford the $1,000 quote that my mechanic gave me to fix it, BlueDevil saved me $980 and I have been driving the vehicle for 5,000 miles without a drip, thanks for such a great product!" Bill - Buffalo, NY

"I have gone three for three on fixing rear main seals leaks with your product, each bottle fixed a different car, I don't know how this secret has been so well kept but I'm telling everyone I see to try it out! " Ron - Melissa, TX

"My name is Brad and I'm an ASE Certified mechanic. I bought your BlueDevil Rear Main Sealer about a month ago. I poured about half of the bottle in my in-laws' 95 Dodge Neon that leaked about 2 quarts of oil every 3-5 days from the rear seal. About 3 days into adding it I noticed the leak slowing. By the end of the first week the leak has completely stopped! That was 3 weeks ago. I'm very impressed with this product and will recommend it to anyone that can't afford to fix it! Thanks again you guys saved me about 7-10 hours worth of labor! "Brad Ferrier - Clearwater, FL-bd

"3/3/11 I must say, your rear main seal worked for me. I found you on line and in that moment felt some hope. I am a mail carrier and drive a 1995 jeep, which had developed a pretty bad oil leak. I narrowed it down to a leaking rear main seal. Desperately needing a miracle, I ordered your product. It took a couple of days, and I actually did a second treatment. Wow, the leak is gone like magic. I have already told others about your products.Your product fixed my problem; with the extreme driving I have to do each day, it's a perfect solution for any normal driving use. " Randy Vickrey - USPS mail carrier

" Folks if you've ever thought testimonials were fake, think again. I recently commented on BlueDevil Gasket sealer and I'm about to on the BlueDevil Rear Main Sealer. I'm a 24 yr AF Vet who really does live in Fairview Hts, IL and struggles like most to keep older vehicles driveable. USA Sealants you've done it again! 6 weeks after using BlueDevil Gasket Sealer for coolant leak, my 174K mi Lumina had simultaneously been leaking oil so I tried your Rear Main Sealer in oil... "BAM" 2 weeks later and oil dipstick has not moved from "full" mark! I don't know what your chemical engineers are doing, but don't let them change the recipe. By the way, 3 months prior to this I tried using STP Oil Stop Leak, even tried a second can a month later...wow, that was a waste of money. USA Sealants I want to personally thank you for the money you have saved me...and with economic situation the way it is...you guys have been a savior. Folks, their products REALLY DO WORK! "
Kirk Mattioda - Fairview Hts, IL-bd
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