I could see springs, but most new vehicles have hardened valve seats that don't ... | Hacker News

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coredog64 on May 31, 2017 | parent | context | favorite | on: Electric Cars Soon Will Cost Less Than Gas Cars, R...

I could see springs, but most new vehicles have hardened valve seats that don't need tretraethyl lead for lubrication.

Ferrous metals, when used in a correctly designed part, have a near infinite fatigue life.

https://en.m.wikipedia.org/wiki/Fatigue_limit

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