Unfourantely I discovered my rear diff cover has a slight leak. If I was smart I would have changed the seal when I had everything apart doing the full tilt bushing kit last year, but hindsight is always 20 20 right. So I ordered the new ford racing diff cover and was debating how to seal the new cover. There are tons of threads on this but I couldn't find a consensus on what to use. I narrowed it down to the lube locker gasket or the new permatex gear oil sealant. What has everyone used successfully. This job is time consuming for a 10$ bottle of sealant and def don't want to do it twice!