Curil T, Curil K, Yamabond, are all excellent. If this "mechanic" seals
cases with RTV, please tell us who it is so we can avoid him like the
plague! RTV is too thick, and changes the bearing clearances and/or warps
the case due to a "stressed" torque twisting the case. Good sealants will
not have a measurable thickness when the case halves are torqued.

Aviation and other sealants have been used for years, but I feel they are
obsolete because they are of the hardening variety. I used to use them too,
but also used to use straight weight oil, you adapt with technology IMO.

John
Aircooled.Net Inc.