Richard Sewin
Reference fitting and tightening a new oil filter. You both describe pretty much exactly the method I use. I resist the temptation of further tightening with a strap, despite due to my inexperience, feeling it's not tight enough. Hence the security paint blob for my peace of mind. As it turns out you both wont be surprised to hear that it never comes loose and is easy to remove next time round.
This feeling of not tight enough, again due to inexperience, is why I generally resort to using a torque wrench. But still I'm learning and perhaps one day I might not need to.
Incidently I don't know If it's true but I once heard or read that Rolls-Royce with their aero engines don't use torque values. They specify tightness by measuring bolt or stud stretch length.
Regards Tony
