Was curious what people are using to seal engine cases (with success). I work at a Detroit Diesel/Allison dealer and have access (free) to a fair cross section of Permatex sealants. I'm guessing Ultra Grey is not an equivalent to 3 Bond. Was thinking about anaerobic gear case sealant. Will order and wait for 3 Bond if the consensus says it is the only safe bet though. Thanks for any input.