Door lock grease recommendation

[Buckeye]

For the past 15 years I have not been able to open my passenger door with a key. It would not turn. I used Mercedes door lock grease (part number 002989065109) and now it works perfectly. I would recommend using the grease every few years.

[Funracer]

Just rebuilt my strike plates and greased them and latches yesterday. Doors shut so nicely now.

Is this something you spray through the keyhole or you have to take off the door card to access the linkage?

[nickelplated5s]

Teflon spray. Locksmiths used to use graphite but it will gum up like a petro product.

[HarryD]

When I had my locks rekeyed, I asked if graphite was the way to go.

He smiled and said sure, paused and then said he would see me in a year or so. I asked why. He told me graphite works for a while but then gums up the locks. He told me teflon spray is the way to go and showed me a can of TriFlow. Its all I use,

[proporsche]

on most of the moving stuff on 911 i use either Zep-45 or Wurth HHS 2000..both works perfect

Ivan

[nickelplated5s]

Amongst other things part of my day job is locksmith. Actually had to adjust a security door today. Wind, cold, the slow latch wasn't working correctly, TMI...

TriFlow is what I use. Pins and springs in locks are so small dust will bind them. Petro for hinges and bearings, not locks.

[KNS]

Would it be okay to give a small squirt of brake cleaner into the lock prior to the TriFlow spray to clean out any possible gunk?

[nickelplated5s]

If you want to go that route I'd suggest alcohol, compressed air and let it sit then TriFlow. The problem with old style keys is the cuts wear and the cylinder pins. Do a search. There are a few places that can repin cylinders and cut matching keys. One reason modern keys have RFID chips in the fob.

[PeteKz]

Originally Posted by nickelplated5s

Amongst other things part of my day job is locksmith.

Hah, hah, aha! The skills of being a landlord...

[Shaun @ Tru6]

I restore a lot of door handles, most I get in have solidified lithium grease in the lock cylinders with wafer tumblers frozen inside the cylinder and only 1 to 4 springing out to lock the door. I paint the inside of the door handle with synthetic grease and Tri Flow in the cylinder after rebuilding them with new springs and polished wafers.

[930cabman]

Our 50+ years old and often older locks and any other mechanism will get clogged with dried grease/dirt and general crud. Operation #1 is to clean all the crap away. I generally use a light lube after that

[Buckeye]

It comes in a small can with the grease under pressure. You spray the grease in the lock

[nickelplated5s]

Originally Posted by PeteKz

Hah, hah, aha! The skills of being a landlord...

CEO, CFO & janitor...