It has 250K on it. I bought it a year ago from its one and only owner through a third party. He appears to have kept it in excellent condition. I don't know its repair history, but I cannot imagine that it's on its original chain.

I don't know if it needs to be changed. The Mercedes dealer here (who has been very nice to me in the past) told me that there is no easy way to check this without pulling the radiator and whatnot out. If they are trying to take advantage of me a little bit, hey, it's only to be expected--I'm a short blond girl. No hard feelings. But I'd prefer to have someone else check and save the twelve hundred dollars.

I need to know the exact tools needed to change the chain. And what's all this about putting a double chain on?

so confused-the most mechanical I get is changing the oil.

thanks,

Rachel