
New technology in leak stop additives has led to a different way of sealing leaks in the systems in your vehicle. Ultimately, these caused more harm than good. Originally, stop leaks were mostly particulate based and used things like sawdust to clog leaks. Stop leak products are relatively new to the automotive market and have made great strides with recent formulas.


Luckily, if your rear main seal is leaking, you have a few options outside of replacing your engine or paying for costly maintenance. If your rear main seal is leaking, it is likely that other components of your engine are worn down and will soon start to leak as well or start to slowly fail.
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However, the process to get to the rear main seal to replace it often requires removal of the entire engine and transmission from the vehicle, a job that can only be done by very skilled mechanics and even then can take 6-10 hours! Due to the duration of the job and the skills required to do the work, it often can be more economical to simply install a new engine in your vehicle than to attempt to repair the rear main seal. The actual seal that is broken is often a relatively low-cost part, often under $50 dollars but sometimes as low as $15. Rear main seal leaks are oft en killers of engines due to their complicated replacement procedure. Just letting a rear main seal leak go is a poor option, even if you don’t intend on keeping your car for very long. Spreading oil over your hot exhaust pipe is, most importantly, a fire hazard! It can also but also lead to unpleasant smells and plumes of smoke coming from your engine. This includes your suspension components, exhaust pipe, and any hoses or wires under your vehicle. While you are driving, the leaking oil will be distributed all over the bottom of your vehicle. Many times the mechanics’ quotes for getting a rear main seal fixed are so high that it seems a better option to drive the vehicle and just add oil regularly to keep your car running. Solving a rear main seal leak can be a frustrating and complicated experience. Can You Drive With a Rear Main Seal Leak? Your vehicle may also demonstrate a dramatic loss of oil in a short period of time. A rear main seal that requires fixing will leave oil stains under a parked vehicle.
