> I wonder if those other manufacturers chains are also rated for the life of the engine or rather not. Mostly yes they are, which is wonderful compared to tim

> I wonder if those other manufacturers chains are also rated for the life of the engine or rather not. Mostly yes they are, which is wonderful compared to timing belts. It rubs my engineer brain intensely wrong to have such a critical engine component be designed as a wear item, especially when its failure can cause engine rebuild levels of damage. However not all manufacturers' quality lives up to the intended design. VW/Audi have a spotty record with various well-known timing chain problems ranging from bad chain tensioners that fail and cause the chain to jump timing to plastic chain guides that break and wreak general havoc. But for most cars a timing chain will last the life of the engine.