一般timing belt的建议使用里程是70000 ~ 100000 miles, 换不换取决于你自己，
如果要换， 建议把water pump一并也换了

我现在因为没钱, 一直没换. 怕怕!

how many miles?

best to change all those 3 belts,

i think nisan have metel belt now, just thought it is kind cool to see that :) and when will we need to change that