Rear Main Sealer
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BlueDevil Rear Main Sealer

Part No. 00234 Warranty Details  
Permanently seals rear main leaks. Just add to engine oil to restore and seal gaskets. It's a great product for timing cover seals!

Product Features:
  • Permanent seal for oil leaks in rear main gaskets and seals
  • Repairs and reconditions damaged rubber seals to like new conditions
  • All leaks are sealed while the vehicle is being driven
  • Easy to use Pour-N-Go
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REVIEW SNAPSHOT®

by PowerReviews
BlueDevilRear Main Sealer
 
3.5

(based on 13 reviews)

Ratings Distribution

  • 5 Stars

     

    (4)

  • 4 Stars

     

    (5)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (3)

83%

of respondents would recommend this to a friend.

Pros

No Pros

Cons

No Cons

Best Uses

  • Quick fix (7)
    • Was this a gift?:
    • No (4)
    • Reviewer Profile:
    • Casual driver (7)

Most Liked Positive Review

 

it worked for me

AFTER 197,000 MILES---I DECIDED TO TRY SYNTHETIC IN MY 03 NISSAN FRONTIER---BAD DECISION---STARTED LEAKING AT THE REAR MAIN SEAL(GOOD SIZED TRICKLE AFTER SHUTTING OFF ENGINE)---AT...Read complete review

AFTER 197,000 MILES---I DECIDED TO TRY SYNTHETIC IN MY 03 NISSAN FRONTIER---BAD DECISION---STARTED LEAKING AT THE REAR MAIN SEAL(GOOD SIZED TRICKLE AFTER SHUTTING OFF ENGINE)---AT 1ST I TRIED BARK'S----DIDN'T WORK---TRIED THIS STUFF & DROVE 60 MILES HIGHWAY---GOT TO MY DESTINATION & WHALLA----HOLY COW---AMAZING---NO LEAK---STILL CAN'T BELIEVE---$15 OR $700 TO $1000 FIX---TRIED THE $15 FIX---THANK YOU BLUE DEVIL!

VS

Most Liked Negative Review

 

Didn't work

Probably made the leak worse.

Probably made the leak worse.

Reviewed by 13 customers

Displaying reviews 1-10

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5.0

It worked for my 01 Pathfinder

By 

from New York.

See all my reviews

3 or more reviews submitted

Pros

  • Simple fix.

Cons

    Best Uses

      Comments about BlueDevil Rear Main Sealer:

      I purchased a 2001 Nissan Pathfinder with 174,000 miles on it. It sat in my driveway for almost a year before I got around to fixing it up. I started to notice an oil spot on my driveway. I tracked down the leak to the rear main seal, it was a slow trickle when the engine was running. I changed the oil to 5W-30 Valvoline high mileage, and added a bottle of Lucas rear main sealer. After a couple of days, the leak slowed down and then completely stopped. Considering that a rear main seal job requires dropping the transmission, or pulling the motor, I would recommend giving this stuff a try.

      • Was this a gift?:
      • No
       
      4.0

      I would use this product again.

      By 

      from Roanoke, Va.

      Verified Reviewer

      Comments about BlueDevil Rear Main Sealer:

      Had an awful leak in my '86 F150, 4.9 Six Cyl. Didn't know if it was the rear main seal or just a bad oil leak. Had oil all over the bottom of the engine all way back to the heavy duty 4 sp. trans., soaked with oil. Every time turned engine off, puddles of oil on driveway.Was going through a quart of oil every 10 days. Put in a bottle of Blue Devil Rear Main Sealer and a bottle of Blue Devil Oil Stop Leak. Followed directions on bottle and it took 4 days, but thrilled to say NO Leaks Anywhere now! Tried Barrs Rear Main Sealer, but didn't do anything. Blue Devil did the trick for me. Both bottles were a little expensive, but worth it.

      • Was this a gift?:
      • No

      (1 of 1 customers found this review helpful)

       
      5.0

      This product is awesome!!!!!

      By 

      from New Caney Tx

      Verified Buyer

      Pros

      • It works

      Cons

      • There arent any in my opinion

      Best Uses

        Comments about BlueDevil Rear Main Sealer:

        Pour it in your oil. I drove my truck for 75 miles after I put it in and had only one drip. The next day I drove about 30 miles and my leak has completely stopped....

        • Was this a gift?:
        • No

        (0 of 1 customers found this review helpful)

         
        1.0

        Real main sealer

        By 

        from Texarkana, Ar

        Comments about BlueDevil Rear Main Sealer:

        Product didn't work it made the oil leak out faster don't use!

        • Was this a gift?:
        • No

        (1 of 2 customers found this review helpful)

         
        1.0

        Caution Do not use

        By 

        from herndon, va

        About Me Casual Driver

        See all my reviews

        3 or more reviews submitted

        Pros

          Cons

          • Dirty
          • Ineffective

          Best Uses

            Comments about BlueDevil Rear Main Sealer:

            I had very small leak, I put this thing in engine, next day morning, Oil pressure light on, and leaking more oil. after 3 days miss fire in in cylender 3, due to huge leak. difficult to drive, no power, grambling the engine and noise. Immediately I went to the Advance auto parts brought the Lucas stop oil leak, in a 25 miles of continous driving, no oil pressure light and no ping noise and no missfire code. So dont use Blue devil rear main sealer, it will ruin your engine.

            (1 of 1 customers found this review helpful)

             
            4.0

            Blue Devil Sealer Works Pretty Well

            By 

            from Nashville, TN

            About Me Auto Enthusiast, Casual Driver

            Pros

              Cons

                Best Uses

                • Quick Fix

                Comments about BlueDevil Rear Main Sealer:

                I have a 1997 Nissan Maxima GXE with 214,000 miles. Within the past year, it has developed oil leaks in three locations -- oil pan, pressure switch, and rear main seal. I had the pressure switch replaced because it was quick and inexpensive. The other two leaks, not so much. The leak from the rear main seal was pretty bad. The Blue Devil additive completely stopped the oil pan leak and reduced the rear main seal leak to a very slow drip. I would definitely recommend this product. I am going to add it to another older vehicle I own as a preventative measure before leaks begin.

                 
                4.0

                It worked for me

                By 

                from Va Beach

                About Me Casual Driver

                Pros

                  Cons

                    Best Uses

                    • Quick Fix

                    Comments about BlueDevil Rear Main Sealer:

                    Rear main seal on my 96 4-runner has had minor leak for a couple years but that changed for the worse this week
                    I started to find Oil traces in driveway so checked oil level finding 1 Quart low.
                    My temp fix was Blue Devil Rear Main Sealer additive.
                    The Product worked as advertised Leak is no more.
                    I will be making true fix when funds become available in future

                    (0 of 1 customers found this review helpful)

                     
                    5.0

                    Worked like a charm!

                    By 

                    from Parma, Mi

                    About Me Casual Driver, Truck Enthusiast

                    See all my reviews

                    3 or more reviews submitted

                    Pros

                    • Completely Stopped Leak

                    Cons

                    • None so far

                    Best Uses

                    • Quick Fix
                    • Truck

                    Comments about BlueDevil Rear Main Sealer:

                    Rear main seal was leaking very badly. I changed oil using Valvoline Max Life High Mileage Synthetic Blend 10W30 oil & added the Blue Devil rear main sealer & BOOM, the leak has stopped completely! I'm amazed as well as very happy. I will use this product again!

                    (3 of 4 customers found this review helpful)

                     
                    5.0

                    it worked for me

                    By 

                    from WATERFORD,CT

                    About Me Casual Driver

                    Pros

                      Cons

                        Best Uses

                        • Quick Fix
                        • Truck

                        Comments about BlueDevil Rear Main Sealer:

                        AFTER 197,000 MILES---I DECIDED TO TRY SYNTHETIC IN MY 03 NISSAN FRONTIER---BAD DECISION---STARTED LEAKING AT THE REAR MAIN SEAL(GOOD SIZED TRICKLE AFTER SHUTTING OFF ENGINE)---AT 1ST I TRIED BARK'S----DIDN'T WORK---TRIED THIS STUFF & DROVE 60 MILES HIGHWAY---GOT TO MY DESTINATION & WHALLA----HOLY COW---AMAZING---NO LEAK---STILL CAN'T BELIEVE---$15 OR $700 TO $1000 FIX---TRIED THE $15 FIX---THANK YOU BLUE DEVIL!

                        (1 of 1 customers found this review helpful)

                         
                        4.0

                        Worked for me

                        By 

                        from Fort Washington, MD

                        About Me Casual Driver

                        Pros

                        • Runs Clean
                        • Safe
                        • Stops The Leak

                        Cons

                          Best Uses

                          • Car
                          • Quick Fix

                          Comments about BlueDevil Rear Main Sealer:

                          I had a rear main seal leak on a 93 Honda Accord estimated to cost $840 in repairs. I purchased
                          a bottle of BlueDevil rear main sealer a bottle of transmission sealer by BlueDevil by mistake. I added the real main sealer and ran the car for a few hours on idol. The next day I added the transmission sealer and ran the car for 2 more hours. Started the motor on the third day and the leak stopped completely with in a half an hour. All I had to do extra was collect the dripping oil in a jar and pour it back in the engine to avoid loosing the product and oil (it was a bad leak)... problem solved, no more leak. The instructions say to drive the car for up to 200 miles, but I used only 1/3 tank of gas running idol in the drive way.

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                          Do you have questions about this product?

                           

                          Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

                          3 Questions | 3 Answers
                          Displaying questions 1-3
                          • Q:

                            Will this help seal a blown head gasket??
                            Asked on 6/18/2016 by tim

                            1 answer

                            • CUSTOMER CARE

                              A:

                              No, Tim! You'll need the BlueDevil Head Gasket Sealant - Part No. 38386. It will repair and seal leaks in blown head gaskets. Please click the below link to view the usage direction of this sealant:

                              http://store.gobdp.com/head-gasket-sealer-directions/

                              Answered on 6/20/2016 by Solomon from AAP
                          • Q:

                            can I use this in 1994 GMC K1500 Suburban 4x4 front and rear differentials?
                            Asked on 11/8/2015 by Jake from Salvo NC

                            1 answer

                            • CUSTOMER CARE

                              A:

                              Hi Jake, glad to assist you! The BlueDevil Rear Main Sealer (Part No. 00234) permanently stops rear main seal leaks. Just add to the engine oil to restore and seal gaskets. It restores dried, cracked, and shrunken rubber seals. Do not use in brake systems or on painted surfaces. For more technical assistance, please call the Bluedevil directly at 1.888.863.0426 and they would be in a better position to help you.

                              Answered on 11/9/2015 by Steve from AAP
                          • Q:

                            Will Rear Main Sealer hurt my oil pump?
                            Asked on 4/13/2012 by Will from Baltimore, Md.

                            1 answer

                            • CUSTOMER CARE

                              A:

                              This Blue Devil Rear Main Sealer Part number 00234 permanently seals rear main leaks. Just add to the engine oil to restore and seal gaskets. Blue Devil is a great repair for timing cover leaks and it will not affect the oil pump.

                              Answered on 4/16/2012 by Steve from AAP
                          Displaying questions 1-3

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