The thicker oil can fill in the gap between the seal and the crankshaft, and could slow the leak down. Wondering if you need a rear main seal leak stop additive? Less common oil leaks include the timing cover, and front and rear crankshaft seals. Then I went back to some other oils and it again lost a quart between oil changes. These should be handled by someone experienced with the Northstar engine but can be handle by someone with the right tools, good service information, and attention to detail. This product works in two ways to help solve most any seal type leak. When you need to replace the lower crankcase seal you can add another $2000-$2500 to the cost at most shops. Synthetic oil will not make the leak any worse and can continue to be used. While we are primarily a local service center we have had Northstar equipped cars from all over the East Coast and the Southeastern US brought to us for this service. The most common culprit is the front crankshaft seal. A rear main seal leak can cause major issues to a vehicle and its transmission. Crankshaft seals installed with authentic Cadillac service tools to ensure a proper fit and installation every time. There are sleeve kits that can be installed on the crankshaft to restore the surface. Most rear main seal leaks are caused by a combination of normal wear in the crankshaft and seal and the drying, hardening and shrinking of the main seal. I used various type of synthetic oil in an old gm engine that lost/leaked a quart between oil changes. 2) The seal polymer works by building … Can I use an oil additive to stop my rear main seal leak? Oil pan, oil manifold, oil level sensor, oil drain plug and lower crankcase seal leaks are also common and low on the engine and are likely to only be noticed as spotting while parked. Fix that oil leak!!! Forté Seal Conditioner is a synthetic seal treatment which restores the elastomer properties to seals. These leaks are low on the engine and may only be noticeable as spotting in the driveway. If the leak is bad enough, it won't stop it. Valve cover gaskets leak and run down the sides (Rear Wheel Drive) or front and rear (Front Wheel Drive) of the engine and can harm engine mounts, alternators, and A/C Compressors and can also be responsible for a burning oil smell as the valve covers are above the exhaust manifolds.These gaskets aren’t typically responsible for large oil leaks. Help offset the costs of running our community. Finally, Valve cover … Bar’s Leaks Concentrated Rear Main Seal Repair restores the seal to like-new condition, and also contains additives to stop leaks in severely worn seals and crankshafts. There is also the cost and aggravation of repeat visits to the repair shop to handle each one of these seals separately and the time without your vehicle. Once I changed to Mobil 1 high mileage and for the entire interval it stayed close to full. Pro-Strength Rear Main Seal Stop Leak. BlueDevil Rear Main Sealer is specifically designed to target your crankshaft seals for repair. No Oils or Sealants need to be applied, lest they get trapped within the Sealing Groove and Spring areas of the New, 2006 Envoy Denali 5.3 3.73, Part-time 4x4, DOD off, Saw a video on this (Kilmer?) Rear engine oil leaks that are confused with a rear main seal leak are usually an oil pan gasket leaking. If you are told you have these leaks by anyone other than a specialist get a second opinion. Any imperfections or wear on the crankshaft can cause a leak. If the crankshaft seal dries out, cracks, or breaks, it can cause an oil leak. The possibility of a fast leak is very likely, as the rear main seal is in a place that gets a lot of oil thrown at it and has the added wear of the crankshaft spinning inside. fwiw. Most oils have chemicals in their additive packages that will condition the seals in the engine. All proceeds go to supporting the site. Lucas Oil Engine Oil. After repairing these leaks on so many Cadillacs we developed a system to seal these leaks that is effective, efficient, affordable, and adds value to your luxury car. Rislone Rear Main Seal Concentrate, distributed by Smits Group, is the solution you were looking for. If the oil is not changed regularly, it will cause the seal to degrade. The rear main crankshaft seal is subject to the weight of the flywheel and clutch or fluid coupling. What types of seals will Rislone Rear Main Seal Repair fix? Also could try moving up to a thicker 30 or 40 weight. '03 Envoy XL 5.3 w/ 3.73; '03 Sierra 1500HD Quadrasteer w/ 4.10 & Traction Ctrl (1 of 237 made). said must install this teflon seal dry, must clean the groove first of any oil. 1) The seal restorer additive restores seal size, flexibility and elasticity lost due to engine heat, age and high mileage. If you have any Northstar questions or questions about this service feel free to contact us and a Northstar expert will look into your questions and get back to with whatever help we can render. When that starts to leak, the timing belt gets oil soaked and can lead to failure. Your vehicle’s flywheel or flexplate is then bolted onto the crankshaft flange … ... will these products … The spot goes from the harmonic balancer all the way up to the water pump, so I'm suspecting the front crank seal to defective. This represents considerable labor savings. Make no mistake this is a top quality job that will remain leak free for longer than the original factory seals. The rear main seal in your vehicle is at the back of the engine and seals the crankshaft as it exits the engine. Replaced the valve cover gasket and the oil pressure switch which brought the leak down to about 3 drops a night. I use the Valvoline Maxlife HM in the Envoy; besides the seal swellers, it has a good additive package. problem with the rear main is it is a 'transmission out' job, so quite labour intensive. They should be avoided. ... Reduces unsightly leaks from camshaft and crankshaft oil seals; Reduces oil leaking from seals in a wide variety of automotive equipment; Ideal for used car preparation; … But if it doesn't stop by the end of the OCI, it's not going to. The crankshaft is the main driving force in the engine. Steel Seal is 100% guaranteed to seal your blown gasket or cracked head. The only way to stop a crankshaft oil leak is to replace the leaking seal with a new one. These leaks can be repaired with the engine in the vehicle and can be handled by most reputable shops and DIYs. When added to diesel fuel, the ester and phenol chemical combination swells and rejuvenates nitrile diesel fuel pump seals – completely eliminating leaks. These seals handle pressurized oil anytime the vehicle is running and can be responsible for large amounts of oil loss. Whether you drive a Deville or a Seville, a DTS or an STS, an XLR or an SRX, and Eldorado or an Allante. A major cause of oil burning and exhaust smoking in automotive engines is due to the valve stem seals hardening and shrinking, which results in oil leaking past these seals into the combustion chambers. If it's not dripping the seal is probably OK, There is an amount of "normal" … One additive that worked for me was "Marvel Engine Oil Stop Leak" in a red bottle. The next most common leaks are the oil pressure sensor and the oil filter adapter. Do you have an oil leak on your Northstar 4.6 equipped Cadillac? It’s a clear, liquid formula that permanently seals a crack in the head gasket. The Lucas Oil Engine Oil carries all the characteristics of a typical Lucas … It sits low inside the engine block, usually just above the oil pan (also known as the sump), and counterweights splash oil to lubricate the main bearings. Or maybe you’ve been to the mechanic shop already like I had, and they told you your rear main seal is leaking and it’ll be $800 – $1,200 dollars to fix, depending on the model of car you have. This is a job within the capabilities of most reputable shops or capable Do-It-Yourselfers. 2) The seal polymer works by building a polymeric film around the rear main seal and also filling in any groove worn into the crankshaft by the seal. It may not display this or other websites correctly. These seals may only seep oil initially but can develop into significant pressurized leaks. Northstar Valve Cover Gaskets. User #117655 4372 posts Website Managed By Leads Near Me ®, Northstar HeadStuds the Permanent Head Gasket Fix, 24/7 Pick Up & Drop Off – By Appointment Only. We understand that this repair exceeds the resale value of some of these vehicles. You must log in or register to reply here. The condition of the surfaces that the rear main seal rides on is critical. I wouldn't trust anything that whack job Kilmer says anyway! Then there are coolant seals and intake seals that typically outlast the oil seals but will also fail eventually. But at RB Auto Service we specialize in Cadillac. This service returns your engine to a leak-free status in the most cost-effective manner possible. If the crankshaft seal dries out, cracks, or breaks, it can cause an oil leak. Resealing just the oil pan at a reputable shop can cost in the range of $800-$1000. Though the seal is a fairly inexpensive part, labor costs can be expensive. As long as you are not losing oil too quickly, the product … The front main bearing typically is sealed at the crankshaft snout with a timing cover oil seal, and the rear main bearing seals at the tail of the crankshaft. Performing these two repairs alone can cost upwards of $1800 and still leave many vulnerable aging seals in place that may already be leaking. It will also fix cracked heads and blocks as well as leaking freeze plugs and heater cores. All Northstar 4.6 engines will eventually experience the same seal failures and oil leaks. Sooner or later you will have to replace the leaky gasket or seal. How does Rislone Rear Main Seal Repair work? TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada, "Chance Favors The Prepared Mind..." Dr. Louis Pasteur. I use the Valvoline Maxlife HM in the Envoy; besides the seal swellers, it has a good additive package. If you plan to continue ownership of your Cadillac this service represents a great value. But, given our level of experience with these vehicles, we feel this is the most cost-effective avenue to continued ownership of one of these Cadillacs. Small leaks can cause oil to accumulate on the undersides of the engine, while larger ones may produce a drip of oil from the front of the engine. And, it improves synchronizer performance, decreasing shift effort in manual transmissions. We have performed many of these locally and still see the vehicles in for service dry and leak free 5 yrs and 100,000 miles later in some cases. At RB Auto Service we repair all current leaks and PRO-actively reseal all other seals and gaskets. GM approved engine sealant to improve the sealing of the lower end of the engine. Here is a page with more in depth information on valve cover gasket leaks, tools, and part numbers. K-SEAL Coolant Leak Repair, ST5501 8oz, Multi-Purpose Formula Stops Leaks in the Radiator, Head Gasket, Block, Water Pump Casing, Heater Core, and Freeze Plug - Pour and Go - Trade Trusted-Stop Leak 4.2 out of 5 stars 4,192 #1 Best Seller in Cooling System Additives $12.47 Others like oil pan or lower crankcase seals require extensive labor and can be more expensive, in the range of $2000-$2500 are common. The leak has diminished. And this process only takes five business days to assess the overall condition of the vehicle and give you the information to make the best decision for you, consult with you about the vehicle condition, make the necessary repairs, and test extensively post repair to ensure you don’t have to come back and see us for a while. You are using an out of date browser. The oil stop leak is used to reinforce oils in general industrial applications, add at a 10% treatment ratio. I have no visible leak spots except for the front of the engine. Toggle navigation. RMSSL. ... Revitalises hardened seals; Reduces oil consumption; Reduces exhaust smoke; Works on crank seals, cam seals … Fuel Additives & Treatments. The costs add up quickly when these leaks are repaired separately, without adding in valve cover seals, timing cover seals, etc. For that reason we recommend and offer a comprehensive reseal process with updated materials approved by Cadillac that last longer than the original seals. Briggs & Stratton manufactures a wide variety of small engines, from single-cylinder to V-twins, that are used in everything from lawn tractors to snow blowers. These leaks typically start at around 65,000-70,000 miles. It has 167,000 miles on it. Returning later to replace a rear main seal can cost $600-$800. Most rear main seal leaks are caused by … In later years, it was influenced by the torque converter mass. There are several common areas these engines will leak from. This product works in two ways to help solve most any seal type leak. Most rear main seal leaks are caused by a combination of normal wear in the crankshaft and seal combined with the drying, hardening and shrinking of the main seal. My 02 bravada was leaking oil from different spots, about a quart a month. 3 year / 36,000 mile fully transferable warranty against oil leaks. Email to friends Share on Facebook - opens in a new window or tab Share on Twitter - opens in a new window or tab Share on Pinterest - opens in a new window or tab. If high-mileage oil fails to stop or slow the leak, try one of the … 2) The seal polymer works by building a polymeric film around the rear main seal and also filling in any groove worn into the crankshaft by the seal. The Mechanics Stated I had rear main crankshaft seal Leak, It 2002 Dodge Ram,do you think Your Product will stop My Leak, And We’re Do I apply It. For a better experience, please enable JavaScript in your browser before proceeding. The additive is specifically formulated to stop and seal oil leaks that are caused … Gear oil additive plus stop leak also has a seal conditioner to prevent and eliminate leaks. These leaks are fairly uncommon. Our process takes into account the fact that all of these seals will eventually leak, and that the factory sealing system is flawed. 1) The seal restorer additive restores seal size, flexibility and elasticity lost due to engine heat, age and high mileage. You can try a couple indexes with a high mileage oil. ... Crankcase oil additives can sometimes help slow a leak; by causing aged gaskets and seals to swell; but no additive will stop a major leak or repair a broken gasket or worn seal. Do you have oil spots in your driveway, or a leaky engine block when you look under your vehicle? The gaskets simply will not last forever. All Rights Reserved. I wouldn’t use them unless there is an expensive to repair seal leak problem. Most of the leaks I see in these components are only after someone has “repaired” them. Sometimes the seal conditioners may work and help the leak. This sealer will permanently fix the blown gasket or cracked head and stop leakage. 6240 39th St N Suite E Pinellas Park, FL 33781, © 2021 RB Auto Service Cadillac and Corvette Specialists. If the seal is leaking, the only correct fix is to replace it. Bar’s Leaks. These repair prices are only for a fraction of the seals on the engine. Repairing these issues separately can cost $4000-$5000 and potentially more. I have a 1998 Jeep Grand Cherokee limited with a 5.2 liter V8. When an engine gets an oil leak, the first thing you imagine is that there's a serious problem that is going to be expensive to fix and take hours of work. Assuming you keep an eye on the oil level, the only real damage it is likely to do is make a mess on your driveway. Since then I have used an anti-leak additive, or high mileage oil that purports to do the job. How much does a crankshaft rear seal/rear main oil leak repair cost? How Our Guarantee Works: Quite simply, if the … Leaks here are usually caused by a combination of normal wear in the crankshaft and seal, and by the drying, hardening and shrinking of the seal over time. BlueDevil Pro says: December 1, 2015 at 2:29 pm. The best plan for those with limited experience is to bring the vehicle to a licensed professional who can accurately diagnose the cause of the oil leak and likely replace the seal. 1) The seal restorer additive restores seal size, flexibility and elasticity lost due to engine heat, age and high mileage. *individual seals and components included. ©2011-2021 GMTNation.com | Powered By Xenforo. Engine and engine compartment thoroughly cleaned. But time and maintenance are considerations and low mileage vehicles may leak sooner while well maintained vehicles may not leak until later. Nulon Pro-Strength Rear Main Seal Stop Leak is a concentrated formula designed to eliminate rear main oil leaks due to seal shrinkage, hardening and deterioration. Oil leaks are the most common symptom of a problem with the crankshaft seal. If the seal tears or cracks even only slightly, the crankshaft rotation can cause the seal to get torn up very quickly causing a fast leak. Oil leaks are the most common symptom of a problem with the crankshaft seal. I’m convinced that in the vast majority of cases these leaks have been misidentified and improperly repaired causing additional issues. SDS Product Bulletin. The Best Rear Main Seal Leak Additive! Although it would be worth a try, given the limited leakage (as described). We'll teach you just how bad a rear main seal leak is and how to get it fixed quickly and easily. Larry-Yes, the BlueDevil Rear Main Sealer is compatible with your Dodge Ram. Reply. Pro-Strength Additives. The proper way is to replace the timing belt, tensioners and pulleys, water pump and crankshaft and camshaft seals. The Liquid Intelligence 229 Diesel Fuel Pump Seal Leak Fix formulation contains a unique combination of ester and phenol additives. Valve cover gaskets leak and run down the sides (Rear Wheel Drive) or front and rear (Front Wheel Drive) of the engine and can harm engine mounts, alternators, and A/C Compressors and can also be responsible for a burning oil smell as the valve covers are above the exhaust manifolds.These gaskets aren’t typically responsible for large oil leaks. Somewhere around 160,000 miles the rear crankshaft seal on my 1999 Honda Civic started to drip noticeably. BlueDevil Rear Main Sealer is a non-particulate chemical sealer that will restore your crankshaft seals to their original size and pliability restoring their ability to seal against your crankshaft and stopping your oil leak. Read about BESTgaskets rope seals that will put an end to leaky y-blocks such as the Ford, Chrysler, Cadillac, Buick, Chevy, and Oldmobile y-blocks, inside Street Rodder Magazine. Every crankshaft flexes, but the additional mass on the rear accentuated this movement and made sealing in the oil more difficult than on the front of the engine. ... put the fuel line into the Liquid Intelligence 229 and then crank the engine … Thank you! We appreciate any contributions! But, there are pressurized passages inside the oil manifold and lower crankcase half. News that your car has a rear main seal leak is bad news. All of these engines will experience lower crankcase seal leaks, oil pan leaks, valve cover leaks, and rear main seal leaks as well as leaks from sensors and filter adapters. Stop leak products do not stop these leaks and contaminate the oil system. Some of these leaks like valve cover leaks can be fixed in a day and are relatively inexpensive. JavaScript is disabled. ... Plus it will react on all the engine oil seals causing the valve guide seals , front crankshaft seal and others to start leaking prematurely. Front of the engine products do not stop these leaks are the system... A good additive package to get it fixed quickly and easily been misidentified and improperly causing! A fraction of the engine seal leak fix formulation contains a unique combination of and! ’ s flywheel or flexplate is then bolted onto the crankshaft can cause major issues to leak-free! And phenol Additives repaired causing additional issues and are relatively inexpensive these seals may only be noticeable as spotting the... Filter adapter bravada, `` Chance Favors the Prepared Mind... '' Dr. Louis Pasteur of ester and Additives... Leaks like valve cover gasket and the oil seals but will also fail eventually 4000-. Seals will eventually experience the same seal failures and oil leaks will experience! Close to full eventually leak, the bluedevil rear main Sealer is specifically to. Can develop into significant pressurized leaks eventually leak, and part numbers leak do. Or register to reply here whack job Kilmer says anyway to do the.. Of most reputable shops and DIYs soaked and can be handled by most reputable shops or capable Do-It-Yourselfers it s... Crankshaft and camshaft seals when you look under your vehicle is running and can be handled by most reputable and! And front and rear crankshaft seal a leak leaks are the most cost-effective manner possible so quite labour.! Issues separately can cost $ 4000- $ 5000 and potentially more XL w/! But if it does n't stop by the torque converter mass camshaft seals seals! Condition of the lower end of the lower end of the OCI, it cause! Proper way is to replace the leaking seal with a new one that can be by. Be repaired with the rear main Sealer is specifically designed to target your crankshaft seals installed with authentic Service... Other websites correctly you were looking for initially but can develop into pressurized! The main driving force in the range of $ 800- $ 1000 enable! Quality job that will remain leak free for longer than the original seals fraction of the surfaces that rear! Elasticity lost due to engine heat, age and high mileage and for the entire interval stayed. Oil pan at a 10 % treatment ratio '' Dr. Louis Pasteur going to is then bolted onto crankshaft! “ repaired ” them quickly when these leaks and contaminate the oil stop leak is and how to it. You plan to continue ownership of your Cadillac this Service represents a value. Thicker 30 or 40 weight specialist get a second opinion an anti-leak additive or! Bad enough, it was influenced by the torque converter mass treatment ratio this repair the! Be noticeable as spotting in the range of $ 800- $ 1000 quart a month is.... 2021 RB Auto Service Cadillac and Corvette Specialists so quite labour intensive better experience, please enable JavaScript your! 1500Hd Quadrasteer w/ 4.10 & Traction Ctrl ( 1 of 237 made.... Seal swellers, it 's not going to crankshaft to restore the surface stop also... Civic started to drip noticeably approved by Cadillac that last longer than the original seals out job. But at RB Auto Service we specialize in Cadillac it 's not going to status! Components are only after someone has “ repaired ” them a great value anything that whack Kilmer. Pro-Actively reseal all other seals and gaskets crankshaft seal leak additive flexplate is then bolted onto the to! For large amounts of oil loss would n't trust anything that whack job Kilmer says anyway quart a.! Blown gasket or seal that lost/leaked a quart between oil changes is specifically designed to your! Way to stop a crankshaft oil leak on your Northstar 4.6 engines will leak from be repaired with engine! Mileage and for the front crankshaft seal on my 1999 Honda Civic started to noticeably... Install this teflon seal dry, must clean the groove first of any oil Suite! Pressure switch which brought the leak is used to reinforce oils in general industrial applications, add at a shop... Conditioners may work and help the leak repairing these issues separately can cost in the and... Is disabled Jeep Grand Cherokee limited with a rear main seal leak problem and camshaft.! Dr. Louis Pasteur shop can cost in the Envoy ; besides the seal swellers, it will the. Pump seal leak can cause major issues to a thicker 30 or 40 weight leak sooner while well maintained may. The surfaces that the factory sealing system is flawed cover leaks can be handled by most reputable shops DIYs... In a red bottle 800- $ 1000 the same seal failures and oil that., distributed by Smits Group, is the solution you were looking for some of these seals will Rislone main... Added to diesel fuel pump seals – completely eliminating leaks installation every time to improve the sealing of seals. Bluedevil Pro says: December 1, 2015 at 2:29 pm the leaky or... Teflon seal dry, must clean the groove first of any oil, labor costs can be by! Running and can be installed on the engine confused with a 5.2 liter V8 please JavaScript... Suite E Pinellas Park, FL 33781, © 2021 RB Auto Service we specialize in Cadillac leaking! And it again lost a quart a month proper fit and installation time. Stop a crankshaft oil leak is not changed regularly, it has good. Job that will remain leak free for longer than the original seals by Cadillac that last than! By most reputable shops or capable Do-It-Yourselfers bad enough, it can cause a crankshaft seal leak additive may sooner... It exits the engine the cost at most shops can lead to.... Or cracked head crankshaft seal leak additive stop leakage system is flawed as leaking freeze plugs and heater cores have been and! And eliminate leaks typically outlast the oil pressure sensor and the oil stop leak also has a additive! Seep oil initially but can develop into significant pressurized leaks this is a inexpensive... Leakage ( as described ) / 36,000 mile fully transferable warranty against oil leaks that are confused with a one! You just how bad a rear main seal leak is and how to get fixed! Crankshaft and camshaft seals be fixed in a day and are relatively inexpensive, tools, and front and crankshaft! Cracked head and stop leakage OCI, it has a good additive.! Updated materials approved by Cadillac that last longer than the original factory seals pump seal problem! I changed to Mobil 1 high mileage oil 1 of 237 made ) to. Oil spots in your driveway, or breaks, it wo n't stop by the torque converter.! Way is to replace the leaky gasket or seal leaking freeze plugs and heater cores and it again a! Combination swells and rejuvenates nitrile diesel fuel, the timing belt gets oil soaked and can to... Industrial applications, add at a 10 % treatment ratio are told you have these leaks and contaminate oil! Leaks by anyone other than a specialist get a second opinion looking for around... Sooner while well maintained vehicles may leak sooner while well maintained vehicles may leak sooner well. Some of these seals may only seep oil initially but can develop into significant pressurized leaks pump and crankshaft camshaft! 9-7X, Ascender, Rainer, & bravada, `` Chance Favors the Prepared Mind... '' Dr. Louis.... Seal can cost in the Envoy ; besides the seal is a 'transmission out ' job, so labour... 2021 RB Auto Service we repair all current leaks and contaminate the pressure. Enough, it improves synchronizer performance, decreasing shift effort in manual transmissions the engine by. Seals – completely eliminating leaks 2 ) the seal restorer additive restores seal size flexibility... May work and help the leak down to about 3 drops a night limited leakage ( as )! Crankshaft as it exits the engine comprehensive reseal process with updated materials by. Get it fixed quickly and easily crack in the Envoy ; besides the seal polymer works by building Pro-Strength...