Xunzi_23
3 in one oil is formulated for bicycles.
can damage non-compatible plastics like polystyrene, PVC, and ABS by softening and compromising structural integrity.
Compatible plastics such as nylon, Teflon, and polypropylene generally withstand 3-in-1 oil, but caution is still advised.
Prolonged exposure to 3-in-1 oil may lead to degradation in sensitive plastic materials, even if they are deemed compatible.
Users have reported mixed experiences with 3-in-1 oil on plastics, with some experiencing damage and others not.
On a fan a synthertic lubricant should be used.
But I would replace….