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RWD - 1991 940SE-can't turn key to Start position

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1991 940SE-can't turn key to Start position 900

Dear Amarin,

Hope you're well. The Teflon-loaded sprays I use are made by DuPont or Black&Decker. I've used these for over 30 years. None has been problematic as a lock lubricant.

The article, to which you kindly posted a link, is most interesting. It focuses on use of Teflon in engine lubricants, i.e., in a very harsh environment. There, a poorly-engineered lubricant not only fails, but can do great damage.

I think the problem with the graphite-loaded lock lubricant I used had to do with the oil, used to get the graphite to where it was needed.

Most oil-based lubricants "gum" at low temperatures, i.e., at about -50⁰F (-46⁰C. Teflon-based lubricants maintain lubricity to temperatures lower than any found in the environment, i.e., to -240⁰F (ca. -150⁰C).

In short, Teflon-based lock lubricants have served me well, in a temperate climate. I cannot say how they'll perform where ambient temperatures are far higher. As locks are not a "high stress" environment, though, I've no reason to think that a well-engineered Teflon-based lubricant will be problematic.

Hope this helps.

Yours faithfully,

Spook






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New 1 1991 940SE-can't turn key to Start position [900]
posted by  sredwine  on Tue Sep 3 16:51 CST 2019 >

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