Question About Hard Start Kits

https://damienpuen618.currentvale.com/posts/thermostat-checks-to-try-before-calling-comfort-experts-for-ac-repair-in-north-fort-worth-3

Question About Hard Start Kits Has anyone added a hard start kit to an older compressor? Ours grunts for a second before it kicks on, and the lights dim. The article mentioned it can help sometimes but won't solve a failing compressor