Step 1: The First Thing to Look For
Once you've determined you've got a dripping leak, you'll want to start from the bottom and work your way up. If you see oil dripping on the back of your oil pan or on the front of your transmission bell housing it's possible you have a rear main seal leak.
But before you panic, you'll want to check other options higher up that may be dripping down.
Step 2: Check Your Cover Gasket and Valley Pan
Step 3: Is It Worth Fixing?
1. Ask local dealerships, body shops about the unrepaired value of the vehicle.
2. Search local websites for things like mechanic specials and see if you can find similar vehicles with the same issue.
3. If the previous two approaches aren't successful, you can look into the tax write off value of the vehicle if you donate to a charity like Cars for Veterans.
4. Once you have a value for your unrepaired car, check online sources like kbb.com or nada.com to get a number for the repaired value of your vehicle.
5. Get a couple of quotes for a repair.
6. Compare the cost of your repair to the difference between the value of your unrepaired and repaired vehicle. If the repair cost is greater than that difference it's time to sell the car as is and start shopping for something new.
Step 4: Alternative Options
Another similar product that supposedly works similarly is Bar's Rear Main Seal Repair. Again, if you're in a spot where you're going to donate the car or sell it instead of repair it, these are potential low cost fixes that may be worth a shot.