3 in 1 Oil For Shower Door Hinge

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May 10, 2005
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Toronto, Canada
Instructions call for using 3-in-1 oil for lubricating the hinges. Plastic washers are used in the hinges and, as far as I can make out, 3-in-1 mineral oil is safe for plastic whereas spray on white grease could attack plastic
https://prod.sd02.cloud.opentext.co...u8ig-oldcastle1-p1&assetDescr=P1N537 Template

Mineral oil is derived from petroleum and is safe for plastics whereas grease, also derived from petroleum, isn't?

How about SHC oils, like PAO Mobil oils, for plastic?
 
I'd go with a penetrating oil containing graphite. Wipe off the excess that will seep out, and the remaining graphite will lubricate and not care about moisture. If you can get dry graphite in there, also good.
 
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