Looks like the rear main seal on my 225 slant is bad, and my understanding is that the engine must be removed to fix it. YouTube has a number of videos of guys using Blue Devil rear main seal stop leak, and most reviews are pretty good. Has anyone on this forum ever used this stuff on a slant six? Did it work? For how long? Will it screw up your engine in the long run? Any and all please weigh in with your opinion. Slant Six Dan, if you're out there, what do you think? If you listen to the YouTube reviews, the stuff seems like a miracle cure - almost too good to be true. Thoughts anyone?
