o k guys: what if before tighten up the M5 to 5/6 Nm we add some permatex medium strength threadlocker blue so there is less chance that they get loose?
we still can remove them if needed. it has worked for me. any experience with it? no electrolysis? no corroding?
thanks
but then...i recalled that the engine runs at a high temperature. could the permatex handle it?

Medium Strength Threadlocker BLUE

Category: ThreadlockersOEM specified. All-purpose, medium strength threadlocker. Ideal for all nut and bolt applications 1/4″ to 3/4″ (6mm to 20mm). Eliminates need for stocking expensive lock nuts and lock washers. Locks and seals while preventing parts loosening due to vibration. Protects threads from corrosion. Removable with hand tools for easy disassembly. Conforms to ASTM D 5363 AN0321 (Mil-S-46163A, Type II, Grade N).