I agree with Gas - Wurth HHS2000 is one of the best lubes around and certainly the one i'd use in the locks. I used to work in a Valeo lock manufacturing plant, the lube that was put in the locks was a sticky silky golden coloured lube called TriFlo - HHS2000 is the closest thing i've found since the place closed. A tip though - it is an adhesive lube though so dont use it anywhere where dust can get to it (like the chain) as once dust and grit get mixed in with it it turns into a very effective(adhesive) grinding paste.

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Pete