Can Rubber Bushings Be Lubricated by Injecting Engine Oil?

2 Answers
McJuniper
07/25/25 3:30am
Rubber bushings should not be lubricated by injecting engine oil, as engine oil can corrode rubber bushings. Exposure to engine oil causes rubber bushings to swell and develop cracks. Instead, petroleum jelly can be used for lubrication. It is important to inspect rubber bushings regularly and replace them promptly if they are damaged. Damaged bushings result in direct metal-to-metal contact between the suspension arm and axle, leading to loud clanking noises. Engine oil, also known as motor oil or engine lubricant, is a substance enhanced with additives in a base oil, primarily containing anti-wear agents, detergents, dispersants, and multi-grade viscosity index improvers. Engine oil is used to lubricate internal combustion engines, with its main functions being to reduce friction and wear on moving parts and to remove sludge and varnish from the engine.
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JanelleLee
08/10/25 5:00pm
I've seen many car owners try to use engine oil injection to solve squeaky bushings, but this is really not a good method. Engine oil is highly corrosive to rubber. While spraying it in may provide temporary lubrication and reduce noise, the rubber quickly becomes brittle and cracks, worsening the problem. Squeaky bushings are usually caused by rubber aging, dust accumulation, or loosening. The correct approach is to first clean the bushing surface with a soft brush, then spray some dedicated rubber protectant for lubrication. If the noise persists, it indicates the bushing may be damaged and needs to be replaced by a professional repair shop. Replacing bushings isn't expensive, typically costing between tens to a few hundred yuan. Delaying the repair could affect suspension components and increase maintenance costs. I often remind my friends: when the car makes unusual noises, don't take shortcuts with makeshift fixes. Regular maintenance checks are the best way to prevent problems.
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