I just observed that I was getting small oil drops under my car. Took it to the dealership and the tech said the Rear main seal was sweating. The dealership quoted about $1200.00 to replace the seal. I've read where some have suggested Blue Devil Rear Main Seal Leak stop. Any comments? The car only has 31000 km on it and the dealer said it probably is dried out from non use. Has anyone ever used this stuff or would you recommend it or something similar.