I used locktite 720 its green - thicker than the blue - i used it on the grub screws on my new Cells - left overnight - i tested it with the nylon lock nut and it worked fine - did not come loose after screwing it down and removing it
BUT - you can still remove them if you use enough force - i tested it and it felt as if it can be removed if needed - i like this better than 243 blue - it goes on thicker and dosnt drip much -
i believed this was not able to ever be removed or under extreme heat - but i dont find that to be the case with this one -
so many different models numbers - very hard to figure it all out - i feel good with this one - would like to hear from others if using different model locktite - and what you think about it etc, - my goal is not to remove the grub screws - or at least they dont come loose from screwing down and un screwing the lock nuts on top - i hopefully plan to lock them down once and thats it - but things never go as planned so i am sure i will have to do a few times before i am satisfied with results