Quote:
Originally Posted by marinabrian
Basically if you see a bolt which has traces of blue or red on the thread form, these are Patchlok bolts, and if reusing them, a spot of anaerobic threadlock should be employed, ie loctite 243 or similar, similarly nut and bolts with nyloc nuts should not be lubricated  |
I support this one!
I have noted that traces of blue or red threadlocker are seen on a lot of bolts that basically not need it. I suspect this is not for locking them in place, but to seal the threaded area from the environment to avoid seizing due to corrosion. Brake caliper carrier bolts for example...
I talked with one of the old school guys a couple of years back, and their best advice was to use underbody sealant (tectyl/dinitrol i.e.) to the threads prior to assembly as this keep the threads protected from the environment and do not dries out like grease i.e. over time.