[Captkaos]

The reason most people say that is because of hearsay. They knew someone that had one that grenaded, or they knew someone that knew someone.......
For a daily driver there is absolutely nothing wrong with them. They work just like ElGracho described and they work well.

They are designed to engage both wheels under slippage. They are not designed for full throttle assault (wide open throttle in a rock crawler, mud, snow, ice,…think finesse). They can be used for street fun but for a serious drag truck, you will need to keep an eye on it since as described once it goes bad, they have a tendency to come apart. For full on drag cars I wouldn’t considering one. In reality all diffs have a life expectancy, just like oil, shocks, springs, u-joints, etc. Most people drive it till it breaks down or fails.