I don't recommend WD40 for very many uses, other than water displacement. It's light lubricity doesn't last very long, and is not intended to be a lubricant. On locks, never use WD40! It does attract nasty stuff, and you will end up worse off!
Use a lock lubricant only, and you will have excellent service. Shouldn't even wear out!

FWIW dept.
WD40 was the end result of a scientist/chemist (British, I think) who was developing a water dispersal chemical. This was his 40th formula and the one that worked! Thus the name WD40.
When we had points for ignitions, and crummy distributor caps, it was common to get moisture inside the cap and the distributor would misfire the cylinders. The quick settlement was to pop the cap and spray WD40 to get the water out. I always just wiped the water out with a rag and let air dry if I could.
I think that this spray was used by fleets and army verhicles, where you couldn't wait for things to dry!

__________________
Ed
1981 300CD (Benzina)
1968 250 S (Gina) 266,000 miles!
1983 Alfa Romeo GTV6 (Guido)
1976 Jaguar XJS-saved a V-12 from the chevy curse, what a great engine!
1988 Cadillac Eldorado (better car than you might think!)
1988 Yamaha Venture (better than a Wing!)
1977 Suzuki GS750B
1976 Yamaha XS 650 (sold)
1991 Suzuki GSX1100G (Shafty Gixser)
1981 Yamaha VX920RH (Euro "Virago")
Solex Moped
1975 Dodge P/U camper


"Time spent in the company of a cat, a beer, and this forum, is not time wasted!"