Squeaky 'Perko' style concealed door closer

[QuackingPlums]

I have concealed door closers on every internal door of my house, which I have never minded until recently because they've all started squeaking. I've been spraying 3-in-1 into the hole where the chain comes out, which makes it squeak-free for a couple of days, after which the squeaking returns. Is there a more permanent lubricant I should be using for this? Is there such a thing as spray-grease?

 

[Matt101]

Sounds to me like they're those nasty £2 contractor ones - swap them for Perkos.

 

[QuackingPlums]

Haha, really? Is the mechanism different? I have a LOT of doors - this is going to cost me a fair whack!

 

[hotrod]

Give this stuff a try:-

http://www.screwfix.com/p/3-in-1-oil-pro-white-lithium-grease/71936

I've just used it on my garage door running gear.

 

[foxhole]

Or bike chain oil, clings to parts and lasts longer than thinner oils.