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The loctite 574 is probably great if the case seals and you never have to take it apart again. Even it it seals you could have to take it apart for other reasons. If you do have to take it apart beware to place lots of time aside for cleanup. The 574 is like friggin super rock. Regardless of what it says even the squeeze out gets hard. The heads were the worst because of all the studs and the springs that you have to go around. I literally had to take a awl and chisle some of the stuff off. I sure hope the hylomar works because I don't want to ever go back to using the anaerobic sealants. Perhaps it is just the 574. I used a peratex sealant on my last engine and I don't remember having the cleanup problem that I had with the 574. Perhaps the threebond is better also.