In this video I’m talking about one of the most annoying problems you can run into—an oil leak that looks like it’s coming from the rear main seal. A true rear main seal job can get expensive fast, so I walk you through the “try this first” route: oil stop leak additives. The goal here isn’t to magically fix a torn seal, but to help condition and swell aging seals and slow down (or stop) a seep so you can buy time and keep the car from marking its spot everywhere. I break down some of the best oil stop leak additives you can grab right now, including BlueDevil Oil Stop Leak, Lucas Oil options, and Bar’s Leaks. I also link my overall budget and best pick so you can choose based on what you’re driving and how bad the leak is. My big takeaway: additives can be a solid temporary solution for minor leaks, but if you’ve got a heavy drip or you’re losing oil fast, you still need to diagnose it properly and plan for a real repair.