I have a 2003 GMC Sierra with 240,000 miles. I put blue devil rear main seal leak was fine in 30 minutes in my 1988 Honda accord, thanks blue devil. Be sure to leave a comment or question on anything that may interest you. Buried in your vehicle’s engine compartment is the rear main seal, which is designed to prevent oil leaks between the block and crankshaft. While leaks of this nature aren’t as severe or potentially costly as rear main seal leaks, they’re still a problem that requires attention. In this article: In the following guide, we’ll bring to light the causes and symptoms of rear main seal leaks, and explore solutions to this problem in depth. I have a 2005 Dodge magnum that my son drove once and overheated it and ever since I cannot get it to start and stay on and at first I would fill the radiator reservoir and it was draining and then milky chocolate looking oil started spilling out on the ground I later discovered the old from the dip stick was also milk chocolate colored so I drained it and replaced it and it still won’t start it was leaking from the rear of the engine is this the rear main seal and would ur sealer work for this possibly. To stop a valve seal-related oil leak from getting out of hand, remedy the problem with the Bar’s Leaks Valve Seal Oil Consumption Repair (VS-1), available from Bar’s Leaks. Since the crank shaft has the toughest job, it gets the biggest and best bearings to make sure it can stand up to the work load. And restrain yourself from swapping components trying to fix the problem before knowing which part is causing you trouble. The rear main seal is always on the opposite the side of your engine as the pulleys and belts. Buried in your vehicle’s engine compartment is the rear main seal, which is designed to prevent oil leaks between the block and crankshaft. BlueDevil Rear Main Sealer is a specially formulated additive that you add directly to your engine oil. Welcome to the BlueDevil Products Auto Blog! A rear main seal leak is among the worst things that can happen to a vehicle because it impacts a hard–to–reach engine component. Thank you for asking about your GMC Sierra. Oil Leak? If there’s another hard-to-access part that could fail soon, but will be accessible as the rear seal change-out is in progress, that would be an example of wisely-chosen additional work for the vehicle. Why is My Oil Leaking After an Oil Change. Other places to inspect for leaks are the valve cover gasket and valley pan, but you’ll need to get under the vehicle with a flashlight to check these parts. I wanted to thank blue devil for there commitment and dedication to not only perfecting a great product, but for helping those in need. For today’s vehicles, the rear main seal comes in one piece. Even if your finances make you generally cautious when it comes to such decisions, the descriptions covered here about rear seal oil leaks could serve as warnings against putting off this type of maintenance for any reason. ... All of the symptoms listed above will need a diagnosis from a skilled mechanic. Once BlueDevil Rear Main Sealer is in your engine it will revitalize the old seals you have, restoring them to their original size, shape and flexibility permanently sealing your rear main seal leak – guaranteed! Admittedly, tasks such as this are among the more down and dirty aspects of DIY car work. But now that you know the type of symptoms a troubled EGR valve will produce, include it in your troubleshooting tests. The best way to prove that you’ve got a rear main seal leak is to check if the engine side of the flexplate or flywheel is oily. Feel free to contact us at 888-863-0426 with any other questions. The dangers of rear main leaks are twofold. Determine whether the cost of a rear main seal repair would outweigh the cost of a replacement vehicle. Basically, rear seal leaks are bad news because they’re: However, an alternative to costly maintenance and regretful vehicle trade–ins does exist thanks to the award-winning engine oil leak repair formulas offered by Bar’s Leaks. If you have a 1 piece rear main seal (found on most new 351 motors) you will have to remove the transmission to replace the rear main seal. According to national averages gathered by Repair Pal, the cost for a rear main seal repair ranges from $659 to $836. It is 100% compatible. Bar’s Leaks is an ISO 9001:2015 certified company. Unfortunately, oil can easily leak from the rear main seal due to its placement at the back of the engine. Install the dye into the vehicle, drive the car around and then use a special light to help determine where the leak is coming from. For one, a leaky rear main seal will rapidly drain the oil supply. Obviously I don’t want to do any damage to my engine, but would reapply Blue Devil if it was absolutely safe to do so. Rear Main Seal It is common for the rear main seal on a BMW’s engine to leak. Required fields are marked *. My concern is a non standard oil cooling system that utilizes coolant and can become blocked with sealers. One way to identify a leak in your car is with the use of a dye. So if you find oil coming out of exhaust, this could be a place to take a look. Based on your description, it sounds as though water/coolant is getting into the engine oil, creating the milky oil you are seeing. VS-1 — for an associated oil consumption problem. Any guidance with your product and a 1999 Toyota 4 Runner – V6? Costlier than many used vehicles’ overall worth. Radial streaks are another potential clue—this happens when oil escapes from the clutch and is then blown outward in all directions by the fan. If you are unable to determine the current as-is value, see whether you can donate the vehicle to charity as a tax write off. I just had my oil changed. Concentrated Rear Main Seal Repair (1040) Super Leak Fix (1305) One Seal Stop Leak (1334) ... it’s sometimes mistaken for a leak in the pan gasket or rear seal. Hi, I have 2004 Honda Odyssey. Often with a rear main seal leak the engine has to be removed from the vehicle to replace the seal. These bearings are called the main bearings in your engine and carry the majority of the stresses on your crank shaft. When this occurs, the likeliest causes are nearby components in the engine, such as the crankshaft or caps. If the air suspension compressor is kept engaged for too long, it can get damaged. The wolf (Canis lupus), also known as the gray wolf or grey wolf, is a large canine native to Eurasia and North America.More than thirty subspecies of Canis lupus have been recognized, and gray wolves, as colloquially understood, comprise non-domestic/feral subspecies. With vehicles, various problems can occur with the engine components over the course of ownership. ... your starter is likely overheating which will cause electrical problems like blown fuses and short circuits. Thank You! Oil stains left in driveways and parking lots. The outside circumference of the rear main seal creates a seal between the engine block and sometimes the oil pan as well. Since the crank shaft has the piston attached to it, the pulleys with all your accessories connected to it and the flywheel which connects to your transmission on it, it carries all the forces and power your engine creates. © Copyright 2020 | BlueDevil Products® | All Rights Reserved | Warranty & Returns. Of course, costs can vary based on the make and model of a given car, as well as taxes and fees that might apply in certain states. Instead this can be caused by a valve seal leak, a common problem we hear about all the time from customers. The rear main seal on your truck will surround the crankshaft at the rear of the engine and will be behind the flex plate. Yes, the BlueDevil Rear Main Sealer can be used with synthetic Mobil 1 oil. Inquire with local car specialists about the current as-is value of your vehicle. there is a possibility I might have a slow leak in my rear main seal. Rear bulkhead/felt seal/cylinder roller/terminal block Diagram. In front-wheel drive vehicles, rear main seal replacement is especially difficult because the seal is placed at the opposite end of where the pulleys and engine-access features are located. You can check the oil level on the dipstick. MS-1: Main Seal Motor Oil Leak Repair — Formulated to stop oil leaks from draining your engine of vital oil. Thanks again for your question! I have a 2001 Jeep Cherokee with the 4.0 in-line six cylinder engine. It is multipurpose and increases the life of the engine. The difference would be in the location of the seal. Then, I heard about Blue Devils Rear Main Seal Stop Leak. purchase BlueDevil Rear Main Sealer directly from BlueDevil, http://store.gobdp.com/oil-stop-leak-49499/. On a rear wheel or 4 wheel drive vehicle the engine is mounted with its front (the side with all the pulleys and belts) towards the front of the car. It would not have any effect on rope, cork or any other type of material that may have been used. Another sign is that you find yourself needing to top-off your oil with greater frequency, despite driving the same routes as before. Need advice on a dealing with a blown head gasket? If the oil is then spilling on the ground, you may be leaking an extreme amount of coolant, which is then overfilling the system and the excess is running out. In addition to oil leak sealer products, some drivers switch to thicker oils like 10W30 over 5W20 for less runniness in the engine, although this is a temporary solution, and eventually, the leak will return as the main seal issue gets worse. If a crankshaft has burrs (rough edges or ridges), this will quickly affect the rear seal. It is buried deep, usually under a lot of protective covers, wires, hoses and unfortunately, the bell housing of your transmission. Since the car’s movement and other car parts can tend to hide oil leak symptoms, most evidence of leaks goes unseen. You can expect to see results after about 100-200 miles of driving. As with most big maintenance jobs, the mechanic will urge the car owner to invest in replacements for various other components that are near or next to the part in question. This would mean that the engine needs to be replaced. In some vehicles, the crankshaft might need removal as well, which could prompt the mechanic to advise an engine rebuild. Thanks for your question. (about a foot down from the top of the dryer). For example, if the oil pressure light goes red just weeks after a fresh change of oil, there’s a strong possibility that you have an engine oil leak caused by a rupture in the rear main seal. A simple way to test if is your car leaking oil is to idle the engine for 15 minutes to see whether any oil appears on the surface underneath. After all, you wouldn’t want to misdiagnose a different, less costly problem in need of oil leak repair for the much more difficult (and expensive) issue of a rear main seal leak. The symptoms are the overheated engine, reduced engine performance, and excessive fuel burning. BAR’S LEAKS technology is proudly made in the USA. Your options might be narrower if the rear seal is exceedingly damaged, which could possibly be the case in a vintage car with outdated engine parts. It happens over time and is common with older cars due to heat and mileage. The rear main seal is a seal in your engine that is very important and usually difficult to reach. [11] I have a leak on my rear main seal in my hyundai tucson, where do you check the oil level? When leaks get bad, a faulty crankshaft is usually the problem. However, one of the likeliest reasons for a seal leak is the prolonged storage of a vehicle. This can be confusing today because the rear of the engine isn’t always at the rear of your engine bay. -BD Auto Pro. There is the chance of a blown fuse for the air compressor pump. No, you would not have to wait until the oil was down before adding the BlueDevil Rear Main Sealer. Then there are the big ones: problems that are urgent, costly and very difficult to rectify, and failure to act could be the end of your vehicle. If you pop your hood and start looking around for the rear main seal, you aren’t going to have much luck seeing it. Thank you. i have a 2008 Chevy Malibu and have a really bad oil leak coming straight off of the oil filter we have tightened the filter numerous times and it keeps coming loose . The BlueDevil Oil Stop Leak is a universal application, and will treat leaking oil pan gaskets, valve cover seals, rear main seals, etc. Stainless steel sleeves can also be pressed over the crankshaft to renew the worn surface and give the seal a new place to ride on. Hello, I strongly believe the real main seal is leaking from an early, rebuilt, 1950’s 8BA Ford Flathead engine. Please contact me as I have sent an e-mail to your tech department. With modern front wheel drive cars, and some all-wheel drive vehicles the engine can be mounted transversely in the vehicle. The rear main seal is just on the outside of the rear main bearing and it keeps the engine oil from leaking out where your crank shaft exits the engine. When you store a vehicle in a garage for weeks or months on end, the seal can dry and harden, which can ultimately lead to cracks and leaks. Some of these problems are simple yet slightly irritating, while others become a bit more serious, yet still easy and low–cost. 3. As a hard-to-reach component, manufacturers originally intended rear seals to last the life of a vehicle with no need for change-outs, unlike various pieces under the hood that drivers are expected to replace every couple of years. Here at BlueDevil we’re hoping to change that myth. In fact, you might find yourself relieved to discover a critical yet different problem with your vehicle that would ultimately be easier and cheaper to fix. I used Blue Devil Rear Main Sealer as prescribed (8 oz per 6 quarts of oil), drove the truck a couple days, and the leak stopped! Inserted flat tip screwdriver between the top panel and the dryer main body in the front of the dryer to pry the top loose from the two retaining clips. However, after 3 weeks and 800 miles with no apparent leaks, the oil drops have reappeared, the same as before. For many drivers, news of such a problem means that it could be time to purchase a new vehicle, because rear main seal repair costs (money, time and hassle) typically surpass the worth of vehicles old enough to develop such leaks. For example, oil could be getting splashed along chassis components as you drive to and from work at highway speeds. 4. used phillips screwdriver to remove the two retaining screws (one left, one right) that hold the front panel to the main body of the dryer. After two weeks the leak stopped and the Toyota is doing fine. If your vehicle is in urgent need of an oil leak repair due to a gap in the rear main seal, the following solutions can fix most rear main seal leaks and prevent your car from leaking oil down the road: A quick side note: if you notice your car is losing or burning oil at a somewhat faster-than-normal rate, you don’t see telltale oil puddles on the ground, and you’ve noticed billowing exhaust from your tailpipe each time you start the engine, the issue probably isn’t due to a rear main seal leak. Because of its location in the engine, replacing a rear main seal includes at least removing the transmission from your vehicle, if not completely removing the engine as well. In some cases, a rear seal will fail after only a short period on the road, despite the use of quality parts. Could it have something to do with rear seal ? For example, if the vehicle in question is a vintage prized possession, you’re not likely to let it go over a malfunctioning engine component. Therefore, it’s important to check further up in the engine compartment for drips. Subscribe to our newsletter now! The inside of the rear main seal creates a seal on the crankshaft where it exits your engine to connect to the transmission. is it same as the engine oil level? Will your product work on front engine seal as well? However, these additions are hard to install and easy to damage due to their placement under the vehicle. Main causes: clogged exhaust system, heating system failure, deposits on moisture sensor, control system failure. Sometimes, the same symptoms can be caused by a crankcase ventilation system that isn’t working properly, but it’s often blow-by that’s the cause. I have not changed the oil since the first time I added the product. The symptoms you have certainly suggest an engine with far too much blow-by (combustion pressure escaping past the piston rings and into the crankcase). After driving the vehicle for longer periods it doesn’t seem to leak, but on short trips it still drips a little on the exhaust manifold (I can smell it) and leaves about a dime size spot overnight on the driveway. Would this product work on a vehicle using synthetic Mobil 1 oil ? Appreciate your feedback. here to see a catalog of all Bar’s Leaks products. Therefore, before you set your mind on rear main seal repairs, make sure that your oil leak is properly diagnosed, and consider alternative options for dealing with the problem. However, depending on the nature and extent of the leak, you could also consider a professional, time-proven oil stop leak product that would repair the gap in the rear seal. If it is indeed a rubber seal, and you are not losing oil too quickly, you would be a good candidate for the product. Available wherever premium auto parts are sold. If the main line running under your slab develops a leak that goes untreated for a prolonged period of time, a void may develop under the foundation or in the yard.